r20207: Fix a couple more places where extra_data was
[ira/wip.git] / source3 / nsswitch / winbindd_group.c
index 157b663acce2b07d87f31329d847948c249f7d60..1b21352c860d6c807e63a2e97698e5275de34c9c 100644 (file)
@@ -41,8 +41,8 @@ static BOOL fill_grent(struct winbindd_gr *gr, const char *dom_name,
                       const char *gr_name, gid_t unix_gid)
 {
        fstring full_group_name;
-       /* Fill in uid/gid */
-       fill_domain_username(full_group_name, dom_name, gr_name);
+
+       fill_domain_username( full_group_name, dom_name, gr_name, True );
 
        gr->gr_gid = unix_gid;
     
@@ -57,18 +57,20 @@ static BOOL fill_grent(struct winbindd_gr *gr, const char *dom_name,
 /* Fill in the group membership field of a NT group given by group_sid */
 
 static BOOL fill_grent_mem(struct winbindd_domain *domain,
+                          struct winbindd_cli_state *state,
                           DOM_SID *group_sid, 
-                          enum SID_NAME_USE group_name_type, 
-                          int *num_gr_mem, char **gr_mem, int *gr_mem_len)
+                          enum lsa_SidType group_name_type, 
+                          size_t *num_gr_mem, char **gr_mem, size_t *gr_mem_len)
 {
        DOM_SID *sid_mem = NULL;
        uint32 num_names = 0;
        uint32 *name_types = NULL;
-       unsigned int buf_len, buf_ndx, i;
-       char **names = NULL, *buf;
+       unsigned int buf_len = 0, buf_ndx = 0, i;
+       char **names = NULL, *buf = NULL;
        BOOL result = False;
        TALLOC_CTX *mem_ctx;
        NTSTATUS status;
+       uint32 group_rid;
        fstring sid_string;
 
        if (!(mem_ctx = talloc_init("fill_grent_mem(%s)", domain->name)))
@@ -98,13 +100,123 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                 goto done;
        }
 
+       /* OPTIMIZATION / HACK. */
+       /* If "enum users" is set to false, and the group being looked
+          up is the Domain Users SID: S-1-5-domain-513, then for the
+          list of members check if the querying user is in that group,
+          and if so only return that user as the gr_mem array.
+          We can change this to a different parameter than "enum users"
+          if neccessaey, or parameterize the group list we do this for. */
+
+       sid_peek_rid( group_sid, &group_rid );
+       if (!lp_winbind_enum_users() && group_rid == DOMAIN_GROUP_RID_USERS) {
+               DOM_SID querying_user_sid;
+               DOM_SID *pquerying_user_sid = NULL;
+               uint32 num_groups = 0;
+               DOM_SID *user_sids = NULL;
+               BOOL u_in_group = False;
+
+               DEBUG(10,("fill_grent_mem: optimized lookup for sid %s domain %s\n",
+                       sid_to_string(sid_string, group_sid), domain->name ));
+
+               if (state) {
+                       uid_t ret_uid = (uid_t)-1;
+                       if (sys_getpeereid(state->sock, &ret_uid)==0) {
+                               /* We know who's asking - look up their SID if
+                                  it's one we've mapped before. */
+                               status = idmap_uid_to_sid(&querying_user_sid, ret_uid);
+                               if (NT_STATUS_IS_OK(status)) {
+                                       pquerying_user_sid = &querying_user_sid;
+                                       DEBUG(10,("fill_grent_mem: querying uid %u -> %s\n",
+                                               (unsigned int)ret_uid,
+                                               sid_to_string(sid_string, pquerying_user_sid) ));
+                               }
+                       }
+               }
+
+               /* Only look up if it was a winbindd user in this domain. */
+               if (pquerying_user_sid &&
+                               (sid_compare_domain(pquerying_user_sid, &domain->sid) == 0)) {
+
+                       DEBUG(10,("fill_grent_mem: querying user = %s\n",
+                               sid_to_string(sid_string, pquerying_user_sid) ));
+
+                       status = domain->methods->lookup_usergroups(domain,
+                                                       mem_ctx,
+                                                       pquerying_user_sid,
+                                                       &num_groups,
+                                                       &user_sids);
+                       if (!NT_STATUS_IS_OK(status)) {
+                               DEBUG(1, ("fill_grent_mem: lookup_usergroups failed "
+                                       "for sid %s in domain %s (error: %s)\n", 
+                                       sid_to_string(sid_string, pquerying_user_sid),
+                                       domain->name,
+                                       nt_errstr(status)));
+                               goto done;
+                       }
+
+                       for (i = 0; i < num_groups; i++) {
+                               if (sid_equal(group_sid, &user_sids[i])) {
+                                       /* User is in Domain Users, add their name
+                                          as the only group member. */
+                                       u_in_group = True;
+                                       break;
+                               }
+                       }
+               }
+
+               if (u_in_group) {
+                       size_t len = 0;
+                       char *domainname = NULL;
+                       char *username = NULL;
+                       fstring name;
+                       enum lsa_SidType type;
+
+                       DEBUG(10,("fill_grent_mem: sid %s in 'Domain Users' in domain %s\n",
+                               sid_to_string(sid_string, pquerying_user_sid), domain->name ));
+
+                       status = domain->methods->sid_to_name(domain, mem_ctx,
+                                                               pquerying_user_sid,
+                                                               &domainname,
+                                                               &username,
+                                                               &type);
+                       if (!NT_STATUS_IS_OK(status)) {
+                               DEBUG(1, ("could not lookup username for user "
+                                       "sid %s in domain %s (error: %s)\n", 
+                                       sid_to_string(sid_string, pquerying_user_sid),
+                                       domain->name,
+                                       nt_errstr(status)));
+                               goto done;
+                       }
+                       fill_domain_username(name, domain->name, username, True);
+                       len = strlen(name);
+                       buf_len = len + 1;
+                       if (!(buf = (char *)SMB_MALLOC(buf_len))) {
+                               DEBUG(1, ("out of memory\n"));
+                               goto done;
+                       }
+                       memcpy(buf, name, buf_len);
+
+                       DEBUG(10,("fill_grent_mem: user %s in 'Domain Users' in domain %s\n",
+                               name, domain->name ));
+               }
+               
+               *gr_mem = buf;
+               *gr_mem_len = buf_len;
+               *num_gr_mem = 1;
+
+               DEBUG(10, ("num_mem = %u, len = %u, mem = %s\n", (unsigned int)*num_gr_mem, 
+                  (unsigned int)buf_len, *num_gr_mem ? buf : "NULL")); 
+               result = True;
+               goto done;
+       }
+
        /* Lookup group members */
        status = domain->methods->lookup_groupmem(domain, mem_ctx, group_sid, &num_names, 
                                                  &sid_mem, &names, &name_types);
        if (!NT_STATUS_IS_OK(status)) {
-               DEBUG(1, ("could not lookup membership for group rid %s in domain %s (error: %s)\n", 
+               DEBUG(1, ("could not lookup membership for group sid %s in domain %s (error: %s)\n", 
                          sid_to_string(sid_string, group_sid), domain->name, nt_errstr(status)));
-
                goto done;
        }
 
@@ -119,9 +231,6 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
 
        /* Add members to list */
 
-       buf = NULL;
-       buf_len = buf_ndx = 0;
-
  again:
 
        for (i = 0; i < num_names; i++) {
@@ -140,13 +249,13 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                /* make sure to allow machine accounts */
 
                if (name_types[i] != SID_NAME_USER && name_types[i] != SID_NAME_COMPUTER) {
-                       DEBUG(3, ("name %s isn't a domain user\n", the_name));
+                       DEBUG(3, ("name %s isn't a domain user (%s)\n", the_name, sid_type_lookup(name_types[i])));
                        continue;
                }
 
                /* Append domain name */
 
-               fill_domain_username(name, domain->name, the_name);
+               fill_domain_username(name, domain->name, the_name, True);
 
                len = strlen(name);
                
@@ -157,7 +266,7 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                        (*num_gr_mem)++;
                        DEBUG(10, ("buf_len + %d = %d\n", len + 1, buf_len));
                } else {
-                       DEBUG(10, ("appending %s at ndx %d\n", name, len));
+                       DEBUG(10, ("appending %s at ndx %d\n", name, buf_ndx));
                        safe_strcpy(&buf[buf_ndx], name, len);
                        buf_ndx += len;
                        buf[buf_ndx] = ',';
@@ -168,7 +277,7 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
        /* Allocate buffer */
 
        if (!buf && buf_len != 0) {
-               if (!(buf = SMB_MALLOC(buf_len))) {
+               if (!(buf = (char *)SMB_MALLOC(buf_len))) {
                        DEBUG(1, ("out of memory\n"));
                        result = False;
                        goto done;
@@ -184,8 +293,8 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
        *gr_mem = buf;
        *gr_mem_len = buf_len;
 
-       DEBUG(10, ("num_mem = %d, len = %d, mem = %s\n", *num_gr_mem, 
-                  buf_len, *num_gr_mem ? buf : "NULL")); 
+       DEBUG(10, ("num_mem = %u, len = %u, mem = %s\n", (unsigned int)*num_gr_mem, 
+                  (unsigned int)buf_len, *num_gr_mem ? buf : "NULL")); 
        result = True;
 
 done:
@@ -201,13 +310,17 @@ done:
 
 void winbindd_getgrnam(struct winbindd_cli_state *state)
 {
-       DOM_SID group_sid;
+       DOM_SID group_sid, tmp_sid;
+       uint32 grp_rid;
        struct winbindd_domain *domain;
-       enum SID_NAME_USE name_type;
+       enum lsa_SidType name_type;
        fstring name_domain, name_group;
        char *tmp, *gr_mem;
-       int gr_mem_len;
+       size_t gr_mem_len;
+       size_t num_gr_mem;
        gid_t gid;
+       union unid_t id;
+       NTSTATUS status;
        
        /* Ensure null termination */
        state->request.data.groupname[sizeof(state->request.data.groupname)-1]='\0';
@@ -241,8 +354,8 @@ void winbindd_getgrnam(struct winbindd_cli_state *state)
        /* should we deal with users for our domain? */
        
        if ( lp_winbind_trusted_domains_only() && domain->primary) {
-               DEBUG(7,("winbindd_getgrnam: My domain -- rejecting getgrnam() for %s\\%s.\n", 
-                       name_domain, name_group));
+               DEBUG(7,("winbindd_getgrnam: My domain -- rejecting "
+                        "getgrnam() for %s\\%s.\n", name_domain, name_group));
                request_error(state);
                return;
        }
@@ -262,73 +375,87 @@ void winbindd_getgrnam(struct winbindd_cli_state *state)
               ((name_type==SID_NAME_ALIAS) && domain->internal) ||
               ((name_type==SID_NAME_WKN_GRP) && domain->internal)) )
        {
-               DEBUG(1, ("name '%s' is not a local, domain or builtin group: %d\n", 
-                         name_group, name_type));
+               DEBUG(1, ("name '%s' is not a local, domain or builtin "
+                         "group: %d\n", name_group, name_type));
                request_error(state);
                return;
        }
 
-       if (!NT_STATUS_IS_OK(idmap_sid_to_gid(&group_sid, &gid, 0))) {
-               DEBUG(1, ("error converting unix gid to sid\n"));
+       /* Make sure that the group SID is within the domain of the
+          original domain */
+
+       sid_copy( &tmp_sid, &group_sid );
+       sid_split_rid( &tmp_sid, &grp_rid );
+       if ( !sid_equal( &tmp_sid, &domain->sid ) ) {
+               DEBUG(3,("winbindd_getgrnam: group %s resolves to a SID in the wrong domain [%s]\n", 
+                       state->request.data.groupname, sid_string_static(&group_sid)));
                request_error(state);
                return;
        }
 
+       
+
+       /* Try to get the GID */
+
+       status = idmap_sid_to_gid(&group_sid, &gid);
+
+       if (NT_STATUS_IS_OK(status)) {
+               goto got_gid;
+       }
+
+       /* Maybe it's one of our aliases in passdb */
+
+       if (pdb_sid_to_id(&group_sid, &id, &name_type) &&
+           ((name_type == SID_NAME_ALIAS) ||
+            (name_type == SID_NAME_WKN_GRP))) {
+               gid = id.gid;
+               goto got_gid;
+       }
+
+       DEBUG(1, ("error converting unix gid to sid\n"));
+       request_error(state);
+       return;
+
+ got_gid:
+
        if (!fill_grent(&state->response.data.gr, name_domain,
                        name_group, gid) ||
-           !fill_grent_mem(domain, &group_sid, name_type,
-                           &state->response.data.gr.num_gr_mem,
+           !fill_grent_mem(domain, state, &group_sid, name_type,
+                           &num_gr_mem,
                            &gr_mem, &gr_mem_len)) {
                request_error(state);
                return;
        }
 
+       state->response.data.gr.num_gr_mem = (uint32)num_gr_mem;
+
        /* Group membership lives at start of extra data */
 
        state->response.data.gr.gr_mem_ofs = 0;
 
        state->response.length += gr_mem_len;
-       state->response.extra_data = gr_mem;
+       state->response.extra_data.data = gr_mem;
        request_ok(state);
 }
 
-/* Return a group structure from a gid number */
-
-void winbindd_getgrgid(struct winbindd_cli_state *state)
+static void getgrgid_got_sid(struct winbindd_cli_state *state, DOM_SID group_sid)
 {
        struct winbindd_domain *domain;
-       DOM_SID group_sid;
-       enum SID_NAME_USE name_type;
-       fstring dom_name;
-       fstring group_name;
-       int gr_mem_len;
+       enum lsa_SidType name_type;
+       char *dom_name;
+       char *group_name;
+       size_t gr_mem_len;
+       size_t num_gr_mem;
        char *gr_mem;
 
-       DEBUG(3, ("[%5lu]: getgrgid %lu\n", (unsigned long)state->pid, 
-                 (unsigned long)state->request.data.gid));
-
-       /* Bug out if the gid isn't in the winbind range */
-
-       if ((state->request.data.gid < server_state.gid_low) ||
-           (state->request.data.gid > server_state.gid_high)) {
-               request_error(state);
-               return;
-       }
-
-       /* Get rid from gid */
-       if (!NT_STATUS_IS_OK(idmap_gid_to_sid(&group_sid, state->request.data.gid, 0))) {
-               DEBUG(1, ("could not convert gid %lu to rid\n", 
-                         (unsigned long)state->request.data.gid));
-               request_error(state);
-               return;
-       }
-
        /* Get name from sid */
 
-       if (!winbindd_lookup_name_by_sid(state->mem_ctx, &group_sid, dom_name,
-                                        group_name, &name_type)) {
+       if (!winbindd_lookup_name_by_sid(state->mem_ctx, &group_sid, &dom_name,
+                                        &group_name, &name_type)) {
                DEBUG(1, ("could not lookup sid\n"));
                request_error(state);
+               TALLOC_FREE(group_name);
+               TALLOC_FREE(dom_name);
                return;
        }
 
@@ -339,6 +466,8 @@ void winbindd_getgrgid(struct winbindd_cli_state *state)
        if (!domain) {
                DEBUG(1,("Can't find domain from sid\n"));
                request_error(state);
+               TALLOC_FREE(group_name);
+               TALLOC_FREE(dom_name);
                return;
        }
 
@@ -349,27 +478,78 @@ void winbindd_getgrgid(struct winbindd_cli_state *state)
                DEBUG(1, ("name '%s' is not a local or domain group: %d\n", 
                          group_name, name_type));
                request_error(state);
+               TALLOC_FREE(group_name);
+               TALLOC_FREE(dom_name);
                return;
        }
 
        if (!fill_grent(&state->response.data.gr, dom_name, group_name, 
                        state->request.data.gid) ||
-           !fill_grent_mem(domain, &group_sid, name_type,
-                           &state->response.data.gr.num_gr_mem,
+           !fill_grent_mem(domain, state, &group_sid, name_type,
+                           &num_gr_mem,
                            &gr_mem, &gr_mem_len)) {
                request_error(state);
+               TALLOC_FREE(group_name);
+               TALLOC_FREE(dom_name);
                return;
        }
 
+       state->response.data.gr.num_gr_mem = (uint32)num_gr_mem;
+
        /* Group membership lives at start of extra data */
 
        state->response.data.gr.gr_mem_ofs = 0;
 
        state->response.length += gr_mem_len;
-       state->response.extra_data = gr_mem;
+       state->response.extra_data.data = gr_mem;
+
+       TALLOC_FREE(group_name);
+       TALLOC_FREE(dom_name);
+
        request_ok(state);
 }
 
+static void getgrgid_recv(void *private_data, BOOL success, const char *sid)
+{
+       struct winbindd_cli_state *state = talloc_get_type_abort(private_data, struct winbindd_cli_state);
+       enum lsa_SidType name_type;
+       DOM_SID group_sid;
+
+       if (success) {
+               DEBUG(10,("getgrgid_recv: gid %lu has sid %s\n",
+                         (unsigned long)(state->request.data.gid), sid));
+
+               string_to_sid(&group_sid, sid);
+               getgrgid_got_sid(state, group_sid);
+               return;
+       }
+
+       /* Ok, this might be "ours", i.e. an alias */
+       if (pdb_gid_to_sid(state->request.data.gid, &group_sid) &&
+           lookup_sid(state->mem_ctx, &group_sid, NULL, NULL, &name_type) &&
+           (name_type == SID_NAME_ALIAS)) {
+               /* Hey, got an alias */
+               DEBUG(10,("getgrgid_recv: we have an alias with gid %lu and sid %s\n",
+                         (unsigned long)(state->request.data.gid), sid));
+               getgrgid_got_sid(state, group_sid);
+               return;
+       }
+
+       DEBUG(1, ("could not convert gid %lu to sid\n", 
+                 (unsigned long)state->request.data.gid));
+       request_error(state);
+}
+
+/* Return a group structure from a gid number */
+void winbindd_getgrgid(struct winbindd_cli_state *state)
+{
+       DEBUG(3, ("[%5lu]: getgrgid %lu\n", (unsigned long)state->pid, 
+                 (unsigned long)state->request.data.gid));
+
+       /* always use the async interface */
+       winbindd_gid2sid_async(state->mem_ctx, state->request.data.gid, getgrgid_recv, state);
+}
+
 /*
  * set/get/endgrent functions
  */
@@ -459,7 +639,7 @@ static BOOL get_sam_group_entries(struct getent_state *ent)
 {
        NTSTATUS status;
        uint32 num_entries;
-       struct acct_info *name_list = NULL, *tmp_name_list = NULL;
+       struct acct_info *name_list = NULL;
        TALLOC_CTX *mem_ctx;
        BOOL result = False;
        struct acct_info *sam_grp_entries = NULL;
@@ -520,7 +700,7 @@ static BOOL get_sam_group_entries(struct getent_state *ent)
                && domain->primary) || domain->internal )
        {
                DEBUG(4,("get_sam_group_entries: %s domain; enumerating local groups as well\n", 
-                       domain->native ? "Native Mode 2k":"BUILTIN"));
+                       domain->native_mode ? "Native Mode 2k":"BUILTIN or local"));
                
                status = domain->methods->enum_local_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
                
@@ -534,17 +714,14 @@ static BOOL get_sam_group_entries(struct getent_state *ent)
                /* Copy entries into return buffer */
 
                if ( num_entries ) {
-                       if ( !(tmp_name_list = SMB_REALLOC_ARRAY( name_list, struct acct_info, ent->num_sam_entries+num_entries)) )
+                       if ( !(name_list = SMB_REALLOC_ARRAY( name_list, struct acct_info, ent->num_sam_entries+num_entries)) )
                        {
                                DEBUG(0,("get_sam_group_entries: Failed to realloc more memory for %d local groups!\n", 
                                        num_entries));
                                result = False;
-                               SAFE_FREE( name_list );
                                goto done;
                        }
                        
-                       name_list = tmp_name_list;
-                               
                        memcpy( &name_list[ent->num_sam_entries], sam_grp_entries, 
                                num_entries * sizeof(struct acct_info) );
                }
@@ -575,7 +752,7 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
        struct getent_state *ent;
        struct winbindd_gr *group_list = NULL;
        int num_groups, group_list_ndx = 0, i, gr_mem_list_len = 0;
-       char *new_extra_data, *gr_mem_list = NULL;
+       char *gr_mem_list = NULL;
 
        DEBUG(3, ("[%5lu]: getgrent\n", (unsigned long)state->pid));
 
@@ -588,17 +765,17 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
 
        num_groups = MIN(MAX_GETGRENT_GROUPS, state->request.data.num_entries);
 
-       if ((state->response.extra_data = SMB_MALLOC_ARRAY(struct winbindd_gr, num_groups)) == NULL) {
+       if ((state->response.extra_data.data = SMB_MALLOC_ARRAY(struct winbindd_gr, num_groups)) == NULL) {
                request_error(state);
                return;
        }
 
-       memset(state->response.extra_data, '\0',
+       memset(state->response.extra_data.data, '\0',
                num_groups * sizeof(struct winbindd_gr) );
 
        state->response.data.num_entries = 0;
 
-       group_list = (struct winbindd_gr *)state->response.extra_data;
+       group_list = (struct winbindd_gr *)state->response.extra_data.data;
 
        if (!state->getgrent_initialized)
                winbindd_setgrent_internal(state);
@@ -615,8 +792,8 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                fstring domain_group_name;
                uint32 result;
                gid_t group_gid;
-               int gr_mem_len;
-               char *gr_mem, *new_gr_mem_list;
+               size_t gr_mem_len;
+               char *gr_mem;
                DOM_SID group_sid;
                struct winbindd_domain *domain;
                                
@@ -651,7 +828,7 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                                 break;
                }
                
-               name_list = ent->sam_entries;
+               name_list = (struct acct_info *)ent->sam_entries;
                
                if (!(domain = 
                      find_domain_from_name(ent->domain_name))) {
@@ -665,13 +842,31 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                sid_copy(&group_sid, &domain->sid);
                sid_append_rid(&group_sid, name_list[ent->sam_entry_index].rid);
 
-               if (!NT_STATUS_IS_OK(idmap_sid_to_gid(&group_sid, &group_gid, 0))) {
-                       
-                       DEBUG(1, ("could not look up gid for group %s\n", 
-                                 name_list[ent->sam_entry_index].acct_name));
-                       
-                       ent->sam_entry_index++;
-                       goto tryagain;
+               if (!NT_STATUS_IS_OK(idmap_sid_to_gid(&group_sid, &group_gid))) {
+                       union unid_t id;
+                       enum lsa_SidType type;
+
+                       DEBUG(10, ("SID %s not in idmap\n",
+                                  sid_string_static(&group_sid)));
+
+                       if (!pdb_sid_to_id(&group_sid, &id, &type)) {
+                               DEBUG(1, ("could not look up gid for group "
+                                         "%s\n", 
+                                         name_list[ent->sam_entry_index].acct_name));
+                               ent->sam_entry_index++;
+                               goto tryagain;
+                       }
+
+                       if ((type != SID_NAME_DOM_GRP) &&
+                           (type != SID_NAME_ALIAS) &&
+                           (type != SID_NAME_WKN_GRP)) {
+                               DEBUG(1, ("Group %s is a %s, not a group\n",
+                                         sid_type_lookup(type),
+                                         name_list[ent->sam_entry_index].acct_name));
+                               ent->sam_entry_index++;
+                               goto tryagain;
+                       }
+                       group_gid = id.gid;
                }
 
                DEBUG(10, ("got gid %lu for group %lu\n", (unsigned long)group_gid,
@@ -680,7 +875,7 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                /* Fill in group entry */
 
                fill_domain_username(domain_group_name, ent->domain_name, 
-                        name_list[ent->sam_entry_index].acct_name);
+                        name_list[ent->sam_entry_index].acct_name, True);
 
                result = fill_grent(&group_list[group_list_ndx], 
                                    ent->domain_name,
@@ -690,6 +885,7 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                /* Fill in group membership entry */
 
                if (result) {
+                       size_t num_gr_mem = 0;
                        DOM_SID member_sid;
                        group_list[group_list_ndx].num_gr_mem = 0;
                        gr_mem = NULL;
@@ -703,28 +899,29 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
                                sid_append_rid(&member_sid, name_list[ent->sam_entry_index].rid);
                                result = fill_grent_mem(
                                        domain,
+                                       NULL,
                                        &member_sid,
                                        SID_NAME_DOM_GRP,
-                                       &group_list[group_list_ndx].num_gr_mem, 
+                                       &num_gr_mem,
                                        &gr_mem, &gr_mem_len);
+
+                               group_list[group_list_ndx].num_gr_mem = (uint32)num_gr_mem;
                        }
                }
 
                if (result) {
                        /* Append to group membership list */
-                       new_gr_mem_list = SMB_REALLOC( gr_mem_list, gr_mem_list_len + gr_mem_len);
+                       gr_mem_list = (char *)SMB_REALLOC(
+                               gr_mem_list, gr_mem_list_len + gr_mem_len);
 
-                       if (!new_gr_mem_list && (group_list[group_list_ndx].num_gr_mem != 0)) {
+                       if (!gr_mem_list && (group_list[group_list_ndx].num_gr_mem != 0)) {
                                DEBUG(0, ("out of memory\n"));
-                               SAFE_FREE(gr_mem_list);
                                gr_mem_list_len = 0;
                                break;
                        }
 
-                       DEBUG(10, ("list_len = %d, mem_len = %d\n",
-                                  gr_mem_list_len, gr_mem_len));
-
-                       gr_mem_list = new_gr_mem_list;
+                       DEBUG(10, ("list_len = %d, mem_len = %u\n",
+                                  gr_mem_list_len, (unsigned int)gr_mem_len));
 
                        memcpy(&gr_mem_list[gr_mem_list_len], gr_mem,
                               gr_mem_len);
@@ -763,27 +960,22 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
        if (group_list_ndx == 0)
                goto done;
 
-       new_extra_data = SMB_REALLOC(
-               state->response.extra_data,
+       state->response.extra_data.data = SMB_REALLOC(
+               state->response.extra_data.data,
                group_list_ndx * sizeof(struct winbindd_gr) + gr_mem_list_len);
 
-       if (!new_extra_data) {
+       if (!state->response.extra_data.data) {
                DEBUG(0, ("out of memory\n"));
                group_list_ndx = 0;
-               SAFE_FREE(state->response.extra_data);
                SAFE_FREE(gr_mem_list);
                request_error(state);
                return;
        }
 
-       state->response.extra_data = new_extra_data;
-
-       memcpy(&((char *)state->response.extra_data)
+       memcpy(&((char *)state->response.extra_data.data)
               [group_list_ndx * sizeof(struct winbindd_gr)], 
               gr_mem_list, gr_mem_list_len);
 
-               SAFE_FREE(gr_mem_list);
-
        state->response.length += gr_mem_list_len;
 
        DEBUG(10, ("returning %d groups, length = %d\n",
@@ -793,6 +985,8 @@ void winbindd_getgrent(struct winbindd_cli_state *state)
 
  done:
 
+               SAFE_FREE(gr_mem_list);
+
        if (group_list_ndx > 0)
                request_ok(state);
        else
@@ -807,7 +1001,6 @@ void winbindd_list_groups(struct winbindd_cli_state *state)
        struct winbindd_domain *domain;
        const char *which_domain;
        char *extra_data = NULL;
-       char *ted = NULL;
        unsigned int extra_data_len = 0, i;
 
        DEBUG(3, ("[%5lu]: list groups\n", (unsigned long)state->pid));
@@ -847,15 +1040,14 @@ void winbindd_list_groups(struct winbindd_cli_state *state)
                
                /* Allocate some memory for extra data.  Note that we limit
                   account names to sizeof(fstring) = 128 characters.  */               
-                ted = SMB_REALLOC(extra_data, sizeof(fstring) * total_entries);
+               extra_data = (char *)SMB_REALLOC(
+                       extra_data, sizeof(fstring) * total_entries);
  
-               if (!ted) {
+               if (!extra_data) {
                        DEBUG(0,("failed to enlarge buffer!\n"));
-                       SAFE_FREE(extra_data);
                        request_error(state);
                        return;
-               } else
-                       extra_data = ted;
+               }
 
                /* Pack group list into extra data fields */
                for (i = 0; i < groups.num_sam_entries; i++) {
@@ -863,7 +1055,7 @@ void winbindd_list_groups(struct winbindd_cli_state *state)
                                            groups.sam_entries)[i].acct_name; 
                        fstring name;
 
-                       fill_domain_username(name, domain->name, group_name);
+                       fill_domain_username(name, domain->name, group_name, True);
                        /* Append to extra data */                      
                        memcpy(&extra_data[extra_data_len], name, 
                                strlen(name));
@@ -877,7 +1069,7 @@ void winbindd_list_groups(struct winbindd_cli_state *state)
        /* Assign extra_data fields in response structure */
        if (extra_data) {
                extra_data[extra_data_len - 1] = '\0';
-               state->response.extra_data = extra_data;
+               state->response.extra_data.data = extra_data;
                state->response.length += extra_data_len;
        }
 
@@ -901,16 +1093,16 @@ struct getgroups_state {
        DOM_SID user_sid;
 
        const DOM_SID *token_sids;
-       int i, num_token_sids;
+       size_t i, num_token_sids;
 
        gid_t *token_gids;
-       int num_token_gids;
+       size_t num_token_gids;
 };
 
 static void getgroups_usersid_recv(void *private_data, BOOL success,
-                                  const DOM_SID *sid, enum SID_NAME_USE type);
+                                  const DOM_SID *sid, enum lsa_SidType type);
 static void getgroups_tokensids_recv(void *private_data, BOOL success,
-                                    DOM_SID *token_sids, int num_token_sids);
+                                    DOM_SID *token_sids, size_t num_token_sids);
 static void getgroups_sid2gid_recv(void *private_data, BOOL success, gid_t gid);
 
 void winbindd_getgroups(struct winbindd_cli_state *state)
@@ -938,10 +1130,18 @@ void winbindd_getgroups(struct winbindd_cli_state *state)
        if (!parse_domain_user_talloc(state->mem_ctx,
                                      state->request.data.username,
                                      &s->domname, &s->username)) {
-               DEBUG(0, ("Could not parse domain user: %s\n",
+               DEBUG(5, ("Could not parse domain user: %s\n",
                          state->request.data.username));
-               request_error(state);
-               return;
+
+               /* error out if we do not have nested group support */
+
+               if ( !lp_winbind_nested_groups() ) {
+                       request_error(state);
+                       return;
+               }
+
+               s->domname = talloc_strdup( state->mem_ctx, get_global_sam_name() );
+               s->username = talloc_strdup( state->mem_ctx, state->request.data.username );
        }
        
        /* Get info for the domain */
@@ -970,9 +1170,10 @@ void winbindd_getgroups(struct winbindd_cli_state *state)
 }
 
 static void getgroups_usersid_recv(void *private_data, BOOL success,
-                                  const DOM_SID *sid, enum SID_NAME_USE type)
+                                  const DOM_SID *sid, enum lsa_SidType type)
 {
-       struct getgroups_state *s = private_data;
+       struct getgroups_state *s =
+               (struct getgroups_state *)private_data;
 
        if ((!success) ||
            ((type != SID_NAME_USER) && (type != SID_NAME_COMPUTER))) {
@@ -987,9 +1188,10 @@ static void getgroups_usersid_recv(void *private_data, BOOL success,
 }
 
 static void getgroups_tokensids_recv(void *private_data, BOOL success,
-                                    DOM_SID *token_sids, int num_token_sids)
+                                    DOM_SID *token_sids, size_t num_token_sids)
 {
-       struct getgroups_state *s = private_data;
+       struct getgroups_state *s =
+               (struct getgroups_state *)private_data;
 
        /* We need at least the user sid and the primary group in the token,
         * otherwise it's an error */
@@ -1011,12 +1213,16 @@ static void getgroups_tokensids_recv(void *private_data, BOOL success,
 
 static void getgroups_sid2gid_recv(void *private_data, BOOL success, gid_t gid)
 {
-       struct getgroups_state *s = private_data;
+       struct getgroups_state *s =
+               (struct getgroups_state *)private_data;
 
-       if (success)
-               add_gid_to_array_unique(NULL, gid,
+       if (success) {
+               if (!add_gid_to_array_unique(s->state->mem_ctx, gid,
                                        &s->token_gids,
-                                       &s->num_token_gids);
+                                       &s->num_token_gids)) {
+                       return;
+               }
+       }
 
        if (s->i < s->num_token_sids) {
                const DOM_SID *sid = &s->token_sids[s->i];
@@ -1033,7 +1239,8 @@ static void getgroups_sid2gid_recv(void *private_data, BOOL success, gid_t gid)
        }
 
        s->state->response.data.num_entries = s->num_token_gids;
-       s->state->response.extra_data = s->token_gids;
+       /* s->token_gids are talloced */
+       s->state->response.extra_data.data = smb_xmemdup(s->token_gids, s->num_token_gids * sizeof(gid_t));
        s->state->response.length += s->num_token_gids * sizeof(gid_t);
        request_ok(s->state);
 }
@@ -1051,7 +1258,7 @@ static void getgroups_sid2gid_recv(void *private_data, BOOL success, gid_t gid)
 */
 
 static void getusersids_recv(void *private_data, BOOL success, DOM_SID *sids,
-                            int num_sids);
+                            size_t num_sids);
 
 void winbindd_getusersids(struct winbindd_cli_state *state)
 {
@@ -1079,12 +1286,13 @@ void winbindd_getusersids(struct winbindd_cli_state *state)
 }
 
 static void getusersids_recv(void *private_data, BOOL success, DOM_SID *sids,
-                            int num_sids)
+                            size_t num_sids)
 {
-       struct winbindd_cli_state *state = private_data;
+       struct winbindd_cli_state *state =
+               (struct winbindd_cli_state *)private_data;
        char *ret = NULL;
        unsigned ofs, ret_size = 0;
-       int i;
+       size_t i;
 
        if (!success) {
                request_error(state);
@@ -1098,7 +1306,7 @@ static void getusersids_recv(void *private_data, BOOL success, DOM_SID *sids,
        }
 
        /* build the reply */
-       ret = SMB_MALLOC(ret_size);
+       ret = (char *)SMB_MALLOC(ret_size);
        if (!ret) {
                DEBUG(0, ("malloc failed\n"));
                request_error(state);
@@ -1113,7 +1321,7 @@ static void getusersids_recv(void *private_data, BOOL success, DOM_SID *sids,
 
        /* Send data back to client */
        state->response.data.num_entries = num_sids;
-       state->response.extra_data = ret;
+       state->response.extra_data.data = ret;
        state->response.length += ret_size;
        request_ok(state);
 }
@@ -1150,10 +1358,10 @@ enum winbindd_result winbindd_dual_getuserdomgroups(struct winbindd_domain *doma
        DOM_SID user_sid;
        NTSTATUS status;
 
-       int i, num_groups;
-       size_t bufsize;
+       char *sidstring;
        ssize_t len;
        DOM_SID *groups;
+       uint32 num_groups;
 
        /* Ensure null termination */
        state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
@@ -1172,26 +1380,21 @@ enum winbindd_result winbindd_dual_getuserdomgroups(struct winbindd_domain *doma
 
        if (num_groups == 0) {
                state->response.data.num_entries = 0;
-               state->response.extra_data = NULL;
+               state->response.extra_data.data = NULL;
                return WINBINDD_OK;
        }
 
-       len=bufsize=0;
-       state->response.extra_data = NULL;
-
-       for (i=0; i<num_groups; i++) {
-               sprintf_append(NULL, (char **)&state->response.extra_data,
-                              &len, &bufsize,
-                              "%s\n", sid_string_static(&groups[i]));
+       if (!print_sidlist(state->mem_ctx, groups, num_groups, &sidstring, &len)) {
+               DEBUG(0, ("talloc failed\n"));
+               return WINBINDD_ERROR;
        }
 
-       if (state->response.extra_data == NULL) {
-               /* Hmmm. Allocation failed somewhere */
+       state->response.extra_data.data = SMB_STRDUP(sidstring);
+       if (!state->response.extra_data.data) {
                return WINBINDD_ERROR;
        }
-
-       state->response.data.num_entries = num_groups;
        state->response.length += len+1;
+       state->response.data.num_entries = num_groups;
 
        return WINBINDD_OK;
 }