Merge removal of unpopular winbind client environment variable.
[tprouty/samba.git] / source / nsswitch / winbindd_group.c
index ed4db07dda48e1b6355763f4d914c2cd42e00679..ab6268583f74d86c41db20f42544cd5c15b1ecbd 100644 (file)
@@ -1,10 +1,10 @@
 /* 
-   Unix SMB/Netbios implementation.
-   Version 2.0
+   Unix SMB/CIFS implementation.
 
    Winbind daemon for ntdom nss module
 
    Copyright (C) Tim Potter 2000
+   Copyright (C) Jeremy Allison 2001.
    
    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
 
 #include "winbindd.h"
 
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+/***************************************************************
+ Empty static struct for negative caching.
+****************************************************************/
+
 /* Fill a grent structure from various other information */
 
-static BOOL fill_grent(struct winbindd_gr *gr, char *gr_name,
-                      gid_t unix_gid)
+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);
 
        gr->gr_gid = unix_gid;
     
        /* Group name and password */
     
-       safe_strcpy(gr->gr_name, gr_name, sizeof(gr->gr_name) - 1);
+       safe_strcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name) - 1);
        safe_strcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd) - 1);
 
        return True;
@@ -48,45 +57,45 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                           int *num_gr_mem, char **gr_mem, int *gr_mem_len)
 {
        uint32 *rid_mem = NULL, num_names = 0;
-       enum SID_NAME_USE *name_types = NULL;
+       uint32 *name_types = NULL;
        int buf_len, buf_ndx, i;
        char **names = NULL, *buf;
        BOOL result = False;
-       
-       if (!num_gr_mem || !gr_mem || !gr_mem_len) return False;
-       
+       TALLOC_CTX *mem_ctx;
+       NTSTATUS status;
+
+       if (!(mem_ctx = talloc_init_named("fill_grent_mem(%s)", domain->name)))
+               return False;
+
        /* Initialise group membership information */
        
-       DEBUG(10, ("fill_grent_mem(): group %s rid 0x%x\n",
-                  domain ? domain->name : "NULL", group_rid));
+       DEBUG(10, ("group %s rid 0x%x\n", domain ? domain->name : "NULL", 
+                  group_rid));
 
        *num_gr_mem = 0;
        
        if (group_name_type != SID_NAME_DOM_GRP) {
-               DEBUG(1, ("fill_grent_mem(): rid %d in domain %s isn't a "
-                         "domain group\n", group_rid, domain->name));
-               return False;
+               DEBUG(1, ("rid %d in domain %s isn't a domain group\n", 
+                         group_rid, domain->name));
+                goto done;
        }
 
        /* Lookup group members */
+       status = domain->methods->lookup_groupmem(domain, mem_ctx, group_rid, &num_names, 
+                                                 &rid_mem, &names, &name_types);
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(1, ("could not lookup membership for group rid %d in domain %s (error: %s)\n", 
+                         group_rid, domain->name, nt_errstr(status)));
 
-       if (!winbindd_lookup_groupmem(domain, group_rid, &num_names, 
-                                     &rid_mem, &names, &name_types)) {
-
-               DEBUG(1, ("fill_grent_mem(): could not lookup membership "
-                         "for group rid %d in domain %s\n", 
-                         group_rid, domain->name));
-
-               return False;
+               goto done;
        }
 
-       DEBUG(10, ("fill_grent_mem(): looked up %d names\n", num_names));
+       DEBUG(10, ("looked up %d names\n", num_names));
 
        if (DEBUGLEVEL >= 10) {
-               for (i = 0; i < num_names; i++) {
+               for (i = 0; i < num_names; i++)
                        DEBUG(10, ("\t%20s %x %d\n", names[i], rid_mem[i],
                                   name_types[i]));
-               }
        }
 
        /* Add members to list */
@@ -103,28 +112,27 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                        
                the_name = names[i];
 
-               DEBUG(10, ("fill_grent_mem(): processing name %s\n", the_name));
+               DEBUG(10, ("processing name %s\n", the_name));
 
-               /* Only add domain users */
+               /* FIXME: need to cope with groups within groups.  These
+                   occur in Universal groups on a Windows 2000 native mode
+                   server. */
 
                if (name_types[i] != SID_NAME_USER) {
-                       DEBUG(3, ("fill_grent_mem(): name %s isn't a domain "
-                                 "user\n", the_name));
+                       DEBUG(3, ("name %s isn't a domain user\n", the_name));
                        continue;
                }
 
                /* Don't bother with machine accounts */
                
                if (the_name[strlen(the_name) - 1] == '$') {
-                       DEBUG(10, ("fill_grent_mem(): %s is machine account\n",
-                                  the_name));
+                       DEBUG(10, ("%s is machine account\n", the_name));
                        continue;
                }
 
                /* Append domain name */
 
-               snprintf(name, sizeof(name), "%s%s%s", domain->name,
-                        lp_winbind_separator(), the_name);
+               fill_domain_username(name, domain->name, the_name);
 
                len = strlen(name);
                
@@ -133,11 +141,9 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
                if (!buf) {
                        buf_len += len + 1; /* List is comma separated */
                        (*num_gr_mem)++;
-                       DEBUG(10, ("fill_grent_mem(): buf_len + %d = %d\n", len + 1,
-                                  buf_len));
+                       DEBUG(10, ("buf_len + %d = %d\n", len + 1, buf_len));
                } else {
-                       DEBUG(10, ("fill_grent_mem(): appending %s at index %d\n",
-                                  name, len));
+                       DEBUG(10, ("appending %s at ndx %d\n", name, len));
                        safe_strcpy(&buf[buf_ndx], name, len);
                        buf_ndx += len;
                        buf[buf_ndx] = ',';
@@ -147,11 +153,11 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
 
        /* Allocate buffer */
 
-       if (!buf) {
+       if (!buf && buf_len != 0) {
                if (!(buf = malloc(buf_len))) {
-                       DEBUG(1, ("fill_grent_mem(): out of memory\n"));
+                       DEBUG(1, ("out of memory\n"));
                        result = False;
-                       goto cleanup;
+                       goto done;
                }
                memset(buf, 0, buf_len);
                goto again;
@@ -164,39 +170,35 @@ static BOOL fill_grent_mem(struct winbindd_domain *domain,
        *gr_mem = buf;
        *gr_mem_len = buf_len;
 
-       DEBUG(10, ("fill_grent_mem(): num_mem = %d, len = %d, mem = %s\n", *num_gr_mem,
-                  buf_len, buf));
-
+       DEBUG(10, ("num_mem = %d, len = %d, mem = %s\n", *num_gr_mem, 
+                  buf_len, *num_gr_mem ? buf : "NULL")); 
        result = True;
 
- cleanup:
-       
-       /* Free memory allocated in winbindd_lookup_groupmem() */
-       
-       safe_free(name_types);
-       safe_free(rid_mem);
-       
-       free_char_array(num_names, names);
+done:
+
+       talloc_destroy(mem_ctx);
        
-       DEBUG(10, ("fill_grent_mem(): returning %d\n", result));
+       DEBUG(10, ("fill_grent_mem returning %d\n", result));
 
        return result;
 }
 
 /* Return a group structure from a group name */
 
-enum winbindd_result winbindd_getgrnam_from_group(struct winbindd_cli_state 
-                                                 *state)
+enum winbindd_result winbindd_getgrnam(struct winbindd_cli_state *state)
 {
        DOM_SID group_sid;
        struct winbindd_domain *domain;
        enum SID_NAME_USE name_type;
        uint32 group_rid;
-       fstring name_domain, name_group, name;
+       fstring name_domain, name_group;
        char *tmp, *gr_mem;
        gid_t gid;
-       int extra_data_len, gr_mem_len;
+       int gr_mem_len;
        
+       /* Ensure null termination */
+       state->request.data.groupname[sizeof(state->request.data.groupname)-1]='\0';
+
        DEBUG(3, ("[%5d]: getgrnam %s\n", state->pid,
                  state->request.data.groupname));
 
@@ -205,64 +207,43 @@ enum winbindd_result winbindd_getgrnam_from_group(struct winbindd_cli_state
        memset(name_group, 0, sizeof(fstring));
 
        tmp = state->request.data.groupname;
-       parse_domain_user(tmp, name_domain, name_group);
-
-       /* Reject names that don't have a domain - i.e name_domain contains 
-          the entire name. */
-
-       if (strequal(name_group, "")) {
+       if (!parse_domain_user(tmp, name_domain, name_group))
                return WINBINDD_ERROR;
-       }    
 
        /* Get info for the domain */
 
        if ((domain = find_domain_from_name(name_domain)) == NULL) {
-               DEBUG(0, ("getgrname_from_group(): could not get domain "
-                         "sid for domain %s\n", name_domain));
-               return WINBINDD_ERROR;
-       }
-
-       if (!domain_handles_open(domain)) {
+               DEBUG(0, ("could not get domain sid for domain %s\n",
+                         name_domain));
                return WINBINDD_ERROR;
        }
 
-       /* Check for cached group entry */
-
-       if (winbindd_fetch_group_cache_entry(name_domain, name_group,
-                                            &state->response.data.gr,
-                                            &state->response.extra_data,
-                                            &extra_data_len)) {
-               state->response.length += extra_data_len;
-               return WINBINDD_OK;
-       }
-
-       snprintf(name, sizeof(name), "%s\\%s", name_domain, name_group);
-
        /* Get rid and name type from name */
         
-       if (!winbindd_lookup_sid_by_name(name, &group_sid, &name_type)) {
+       if (!winbindd_lookup_sid_by_name(domain, name_group, &group_sid, 
+                                        &name_type)) {
                DEBUG(1, ("group %s in domain %s does not exist\n", 
                          name_group, name_domain));
                return WINBINDD_ERROR;
        }
 
        if ((name_type != SID_NAME_ALIAS) && (name_type != SID_NAME_DOM_GRP)) {
-               DEBUG(1, ("from_group: name '%s' is not a local or domain "
-                         "group: %d\n", name_group, name_type));
+               DEBUG(1, ("name '%s' is not a local or domain group: %d\n", 
+                         name_group, name_type));
                return WINBINDD_ERROR;
        }
 
        /* Fill in group structure */
+       if (!sid_peek_check_rid(&domain->sid, &group_sid, &group_rid))
+               return WINBINDD_ERROR;
 
-       sid_split_rid(&group_sid, &group_rid);
-
-       if (!winbindd_idmap_get_gid_from_rid(domain->name, group_rid, &gid)) {
-               DEBUG(1, ("error sursing unix gid for sid\n"));
+       if (!winbindd_idmap_get_gid_from_sid(&group_sid, &gid)) {
+               DEBUG(1, ("error converting unix gid to sid\n"));
                return WINBINDD_ERROR;
        }
 
-       if (!fill_grent(&state->response.data.gr, 
-                       state->request.data.groupname, gid) ||
+       if (!fill_grent(&state->response.data.gr, name_domain,
+                       name_group, gid) ||
            !fill_grent_mem(domain, group_rid, name_type,
                            &state->response.data.gr.num_gr_mem,
                            &gr_mem, &gr_mem_len)) {
@@ -276,95 +257,65 @@ enum winbindd_result winbindd_getgrnam_from_group(struct winbindd_cli_state
        state->response.length += gr_mem_len;
        state->response.extra_data = gr_mem;
 
-       /* Update cached group info */
-
-       winbindd_store_group_cache_entry(name_domain, name_group, 
-                                        &state->response.data.gr,
-                                        state->response.extra_data,
-                                        gr_mem_len);
-
        return WINBINDD_OK;
 }
 
 /* Return a group structure from a gid number */
 
-enum winbindd_result winbindd_getgrnam_from_gid(struct winbindd_cli_state 
-                                                *state)
+enum winbindd_result winbindd_getgrgid(struct winbindd_cli_state *state)
 {
        struct winbindd_domain *domain;
        DOM_SID group_sid;
        enum SID_NAME_USE name_type;
+       fstring dom_name;
        fstring group_name;
        uint32 group_rid;
-       int extra_data_len, gr_mem_len;
+       int gr_mem_len;
        char *gr_mem;
 
+       DEBUG(3, ("[%5d]: getgrgid %d\n", state->pid, 
+                 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)) {
+           (state->request.data.gid > server_state.gid_high))
                return WINBINDD_ERROR;
-       }
-
-       DEBUG(3, ("[%5d]: getgrgid %d\n", state->pid, 
-                 state->request.data.gid));
 
        /* Get rid from gid */
 
        if (!winbindd_idmap_get_rid_from_gid(state->request.data.gid, 
                                             &group_rid, &domain)) {
-               DEBUG(1, ("Could not convert gid %d to rid\n", 
+               DEBUG(1, ("could not convert gid %d to rid\n", 
                          state->request.data.gid));
                return WINBINDD_ERROR;
        }
 
-       if (!domain_handles_open(domain)) {
-               return WINBINDD_ERROR;
-       }
-
-       /* Try a cached entry */
-
-       if (winbindd_fetch_gid_cache_entry(domain->name, 
-                                          state->request.data.gid,
-                                          &state->response.data.gr,
-                                          &state->response.extra_data,
-                                          &extra_data_len)) {
-               state->response.length += extra_data_len;
-               return WINBINDD_OK;
-       }
-
        /* Get sid from gid */
 
        sid_copy(&group_sid, &domain->sid);
        sid_append_rid(&group_sid, group_rid);
 
-       if (!winbindd_lookup_name_by_sid(&group_sid, group_name, &name_type)) {
-               DEBUG(1, ("Could not lookup sid\n"));
+       if (!winbindd_lookup_name_by_sid(&group_sid, dom_name, group_name, &name_type)) {
+               DEBUG(1, ("could not lookup sid\n"));
                return WINBINDD_ERROR;
        }
 
-       if (strcmp(lp_winbind_separator(),"\\")) {
-               string_sub(group_name, "\\", lp_winbind_separator(), 
-                          sizeof(fstring));
-       }
-
        if (!((name_type == SID_NAME_ALIAS) || 
              (name_type == SID_NAME_DOM_GRP))) {
-               DEBUG(1, ("from_gid: name '%s' is not a local or domain "
-                         "group: %d\n", group_name, name_type));
+               DEBUG(1, ("name '%s' is not a local or domain group: %d\n", 
+                         group_name, name_type));
                return WINBINDD_ERROR;
        }
 
        /* Fill in group structure */
 
-       if (!fill_grent(&state->response.data.gr, group_name, 
+       if (!fill_grent(&state->response.data.gr, dom_name, group_name, 
                        state->request.data.gid) ||
            !fill_grent_mem(domain, group_rid, name_type,
                            &state->response.data.gr.num_gr_mem,
-                           &gr_mem, &gr_mem_len)) {
+                           &gr_mem, &gr_mem_len))
                return WINBINDD_ERROR;
-       }
-
 
        /* Group membership lives at start of extra data */
 
@@ -373,13 +324,6 @@ enum winbindd_result winbindd_getgrnam_from_gid(struct winbindd_cli_state
        state->response.length += gr_mem_len;
        state->response.extra_data = gr_mem;
 
-       /* Update cached group info */
-
-       winbindd_store_gid_cache_entry(domain->name, state->request.data.gid,
-                                      &state->response.data.gr,
-                                      state->response.extra_data,
-                                      gr_mem_len);
-
        return WINBINDD_OK;
 }
 
@@ -391,17 +335,14 @@ enum winbindd_result winbindd_getgrnam_from_gid(struct winbindd_cli_state
 
 enum winbindd_result winbindd_setgrent(struct winbindd_cli_state *state)
 {
-       struct winbindd_domain *tmp;
+       struct winbindd_domain *domain;
 
        DEBUG(3, ("[%5d]: setgrent\n", state->pid));
 
-       if (state == NULL) return WINBINDD_ERROR;
-       
        /* Check user has enabled this */
 
-       if (!lp_winbind_enum_groups()) {
+       if (!lp_winbind_enum_groups())
                return WINBINDD_ERROR;
-       }
 
        /* Free old static data if it exists */
        
@@ -412,30 +353,23 @@ enum winbindd_result winbindd_setgrent(struct winbindd_cli_state *state)
        
        /* Create sam pipes for each domain we know about */
        
-       for (tmp = domain_list; tmp != NULL; tmp = tmp->next) {
+       for (domain = domain_list(); domain != NULL; domain = domain->next) {
                struct getent_state *domain_state;
                
-               /* Skip domains other than WINBINDD_DOMAIN environment 
-                  variable */
-               
-               if ((strcmp(state->request.domain, "") != 0) &&
-                   !check_domain_env(state->request.domain, tmp->name)) {
-                       continue;
-               }
-               
                /* Create a state record for this domain */
                
                if ((domain_state = (struct getent_state *)
                     malloc(sizeof(struct getent_state))) == NULL) {
-                       
+                       DEBUG(1, ("winbindd_setgrent: malloc failed for domain_state!\n"));
                        return WINBINDD_ERROR;
                }
                
                ZERO_STRUCTP(domain_state);
                
+               fstrcpy(domain_state->domain_name, domain->name);
+
                /* Add to list of open domains */
                
-               domain_state->domain = tmp;
                DLIST_ADD(state->getgrent_state, domain_state);
        }
        
@@ -448,8 +382,6 @@ enum winbindd_result winbindd_endgrent(struct winbindd_cli_state *state)
 {
        DEBUG(3, ("[%5d]: endgrent\n", state->pid));
 
-       if (state == NULL) return WINBINDD_ERROR;
-
        free_getent_state(state->getgrent_state);
        state->getgrent_state = NULL;
        
@@ -465,87 +397,111 @@ enum winbindd_result winbindd_endgrent(struct winbindd_cli_state *state)
 
 static BOOL get_sam_group_entries(struct getent_state *ent)
 {
-       uint32 status, num_entries, start_ndx = 0;
-       struct acct_info *name_list = NULL;
+       NTSTATUS status;
+       uint32 num_entries;
+       struct acct_info *name_list = NULL, *tmp_name_list = NULL;
+       TALLOC_CTX *mem_ctx;
+       BOOL result = False;
+       struct acct_info *sam_grp_entries = NULL;
+       struct winbindd_domain *domain;
         
-       if (ent->got_all_sam_entries) {
+       if (ent->got_sam_entries)
                return False;
-       }
 
-#if 0
-       if (winbindd_fetch_group_cache(ent->domain->name, 
-                                      &ent->sam_entries,
-                                      &ent->num_sam_entries)) {
-               return True;
-       }
-#endif
-               
-       /* Fetch group entries */
-               
-       if (!domain_handles_open(ent->domain)) {
+       if (!(mem_ctx = talloc_init_named("get_sam_group_entries(%s)",
+                                         ent->domain_name))) {
+               DEBUG(1, ("get_sam_group_entries: could not create talloc context!\n")); 
                return False;
        }
-
+               
        /* Free any existing group info */
 
-       if (ent->sam_entries) {
-               free(ent->sam_entries);
-               ent->sam_entries = NULL;
-               ent->num_sam_entries = 0;
-       }
-               
+       SAFE_FREE(ent->sam_entries);
+       ent->num_sam_entries = 0;
+       ent->got_sam_entries = True;
+
        /* Enumerate domain groups */
-               
-       do {
-               struct acct_info *sam_grp_entries = NULL;
 
-               num_entries = 0;
+       num_entries = 0;
 
-               status =
-                       wb_samr_enum_dom_groups(&ent->domain->
-                                               sam_dom_handle,
-                                               &start_ndx,
-                                               0x8000, /* buffer size? */
-                                               (struct acct_info **)
-                                               &sam_grp_entries,
-                                               &num_entries);
+       if (!(domain = find_domain_from_name(ent->domain_name))) {
+               DEBUG(3, ("no such domain %s in get_sam_group_entries\n", ent->domain_name));
+               goto done;
+       }
 
-               /* Copy entries into return buffer */
+       /* always get the domain global groups */
 
-               if (num_entries) {
+       status = domain->methods->enum_dom_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
+       
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(3, ("get_sam_group_entries: could not enumerate domain groups! Error: %s", nt_errstr(status)));
+               result = False;
+               goto done;
+       }
 
-                       name_list = Realloc(name_list,
-                                           sizeof(struct acct_info) *
-                                           (ent->num_sam_entries +
-                                            num_entries));
+       /* Copy entries into return buffer */
 
-                       memcpy(&name_list[ent->num_sam_entries],
-                              sam_grp_entries, 
-                              num_entries * sizeof(struct acct_info));
+       if (num_entries) {
+               if ( !(name_list = malloc(sizeof(struct acct_info) * num_entries)) ) {
+                       DEBUG(0,("get_sam_group_entries: Failed to malloc memory for %d domain groups!\n", 
+                               num_entries));
+                       result = False;
+                       goto done;
                }
-
-               ent->num_sam_entries += num_entries;
-
-               if (status != STATUS_MORE_ENTRIES) {
-                       break;
+               memcpy( name_list, sam_grp_entries, num_entries * sizeof(struct acct_info) );
+       }
+       
+       ent->num_sam_entries = num_entries;
+       
+       /* get the domain local groups if we are a member of 
+          a native win2k domain */
+          
+       if ( domain->native_mode && domain->methods->enum_local_groups )
+       {
+               DEBUG(4,("get_sam_group_entries: Native Mode 2k domain; enumerating local groups as well\n"));
+               
+               status = domain->methods->enum_local_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
+               
+               if ( !NT_STATUS_IS_OK(status) ) { 
+                       DEBUG(3,("get_sam_group_entries: Failed to enumerate domain local groups!\n"));
+                       num_entries = 0;
                }
-
-       } while (ent->num_sam_entries < MAX_FETCH_SAM_ENTRIES);
+               else
+                       DEBUG(4,("get_sam_group_entries: Returned %d local groups\n", num_entries));
                
-#if 0
-       /* Fill cache with received entries */
-
-       winbindd_store_group_cache(ent->domain->name, ent->sam_entries,
-                                  ent->num_sam_entries);
-#endif
+               /* Copy entries into return buffer */
 
+               if ( num_entries ) {
+                       if ( !(tmp_name_list = Realloc( name_list, sizeof(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) );
+               }
+       
+               ent->num_sam_entries += num_entries;
+       }
+       
+               
        /* Fill in remaining fields */
 
        ent->sam_entries = name_list;
        ent->sam_entry_index = 0;
-       ent->got_all_sam_entries = (status != STATUS_MORE_ENTRIES);
 
-       return ent->num_sam_entries > 0;
+       result = (ent->num_sam_entries > 0);
+
+ done:
+       talloc_destroy(mem_ctx);
+
+       return result;
 }
 
 /* Fetch next group entry from ntdom database */
@@ -557,33 +513,27 @@ enum winbindd_result 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 *sep, *new_extra_data, *gr_mem_list = NULL;
+       char *new_extra_data, *gr_mem_list = NULL;
 
        DEBUG(3, ("[%5d]: getgrent\n", state->pid));
 
-       if (state == NULL) return WINBINDD_ERROR;
-
        /* Check user has enabled this */
 
-       if (!lp_winbind_enum_groups()) {
+       if (!lp_winbind_enum_groups())
                return WINBINDD_ERROR;
-       }
 
        num_groups = MIN(MAX_GETGRENT_GROUPS, state->request.data.num_entries);
 
        if ((state->response.extra_data = 
-            malloc(num_groups * sizeof(struct winbindd_gr))) == NULL) {
+            malloc(num_groups * sizeof(struct winbindd_gr))) == NULL)
                return WINBINDD_ERROR;
-       }
 
        state->response.data.num_entries = 0;
 
        group_list = (struct winbindd_gr *)state->response.extra_data;
-       sep = lp_winbind_separator();
 
-       if (!(ent = state->getgrent_state)) {
+       if (!(ent = state->getgrent_state))
                return WINBINDD_ERROR;
-       }
 
        /* Start sending back groups */
 
@@ -592,12 +542,14 @@ enum winbindd_result 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;
                
                /* Do we need to fetch another chunk of groups? */
 
        tryagain:
 
-               DEBUG(10, ("getgrent(): entry_index = %d, num_entries = %d\n",
+               DEBUG(10, ("entry_index = %d, num_entries = %d\n",
                           ent->sam_entry_index, ent->num_sam_entries));
 
                if (ent->num_sam_entries == ent->sam_entry_index) {
@@ -605,24 +557,23 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
                        while(ent && !get_sam_group_entries(ent)) {
                                struct getent_state *next_ent;
 
-                               DEBUG(10, ("getgrent(): freeing state info for "
-                                          "domain %s\n", ent->domain->name));
+                               DEBUG(10, ("freeing state info for domain %s\n", ent->domain_name)); 
 
                                /* Free state information for this domain */
 
-                               safe_free(ent->sam_entries);
-                               ent->sam_entries = NULL;
+                               SAFE_FREE(ent->sam_entries);
 
                                next_ent = ent->next;
                                DLIST_REMOVE(state->getgrent_state, ent);
                                
-                               free(ent);
+                               SAFE_FREE(ent);
                                ent = next_ent;
                        }
 
                        /* No more domains */
 
-                       if (!ent) break;
+                       if (!ent) 
+                                break;
                }
                
                name_list = ent->sam_entries;
@@ -630,58 +581,73 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
                /* Lookup group info */
                
                if (!winbindd_idmap_get_gid_from_rid(
-                       ent->domain->name,
+                       ent->domain_name,
                        name_list[ent->sam_entry_index].rid,
                        &group_gid)) {
                        
-                       DEBUG(1, ("getgrent(): could not look up gid for group %s\n",
+                       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;
                }
 
-               DEBUG(10, ("getgrent(): got gid %d for group %x\n", group_gid,
+               DEBUG(10, ("got gid %d for group %x\n", group_gid,
                           name_list[ent->sam_entry_index].rid));
                
                /* Fill in group entry */
 
-               slprintf(domain_group_name, sizeof(domain_group_name) - 1,
-                        "%s%s%s", ent->domain->name, lp_winbind_separator(), 
+               fill_domain_username(domain_group_name, ent->domain_name, 
                         name_list[ent->sam_entry_index].acct_name);
-   
+
                result = fill_grent(&group_list[group_list_ndx], 
-                                   domain_group_name, group_gid);
+                                   ent->domain_name,
+                                   name_list[ent->sam_entry_index].acct_name,
+                                   group_gid);
 
                /* Fill in group membership entry */
 
                if (result) {
-                       int gr_mem_len;
-                       char *gr_mem, *new_gr_mem_list;
+                       struct winbindd_domain *domain;
 
-                       /* Get group membership */
+                       if (!(domain = 
+                             find_domain_from_name(ent->domain_name))) {
+                               DEBUG(3, ("No such domain %s in winbindd_getgrent\n", ent->domain_name));
+                               result = False;
+                               goto done;
+                       }
 
-                       result = fill_grent_mem(
-                               ent->domain,
-                               name_list[ent->sam_entry_index].rid,
-                               SID_NAME_DOM_GRP,
-                               &group_list[group_list_ndx].num_gr_mem, 
-                               &gr_mem, &gr_mem_len);
+                       group_list[group_list_ndx].num_gr_mem = 0;
+                       gr_mem = NULL;
+                       gr_mem_len = 0;
+                       
+                       /* Get group membership */                      
+                       if (state->request.cmd == WINBINDD_GETGRLST) {
+                               result = True;
+                       } else {
+                               result = fill_grent_mem(
+                                       domain,
+                                       name_list[ent->sam_entry_index].rid,
+                                       SID_NAME_DOM_GRP,
+                                       &group_list[group_list_ndx].num_gr_mem, 
+                                       &gr_mem, &gr_mem_len);
+                       }
+               }
 
+               if (result) {
                        /* Append to group membership list */
-
                        new_gr_mem_list = Realloc(
                                gr_mem_list,
                                gr_mem_list_len + gr_mem_len);
 
-                       if (!new_gr_mem_list) {
-                               DEBUG(0, ("getgrent(): out of memory\n"));
-                               free(gr_mem_list);
+                       if (!new_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, ("getgrent(): list_len = %d, mem_len = %d\n",
+                       DEBUG(10, ("list_len = %d, mem_len = %d\n",
                                   gr_mem_list_len, gr_mem_len));
 
                        gr_mem_list = new_gr_mem_list;
@@ -689,7 +655,7 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
                        memcpy(&gr_mem_list[gr_mem_list_len], gr_mem,
                               gr_mem_len);
 
-                       safe_free(gr_mem);
+                       SAFE_FREE(gr_mem);
 
                        group_list[group_list_ndx].gr_mem_ofs = 
                                gr_mem_list_len;
@@ -703,7 +669,7 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
                
                if (result) {
 
-                       DEBUG(10, ("getgrent(): adding group num_entries = %d\n",
+                       DEBUG(10, ("adding group num_entries = %d\n",
                                   state->response.data.num_entries));
 
                        group_list_ndx++;
@@ -720,9 +686,8 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
 
        /* Copy the list of group memberships to the end of the extra data */
 
-       if (group_list_ndx == 0) {
+       if (group_list_ndx == 0)
                goto done;
-       }
 
        new_extra_data = Realloc(
                state->response.extra_data,
@@ -731,9 +696,8 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
        if (!new_extra_data) {
                DEBUG(0, ("out of memory\n"));
                group_list_ndx = 0;
-               safe_free(state->response.extra_data);
-               state->response.extra_data = NULL;
-               safe_free(gr_mem_list);
+               SAFE_FREE(state->response.extra_data);
+               SAFE_FREE(gr_mem_list);
 
                return WINBINDD_ERROR;
        }
@@ -744,16 +708,17 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
               [group_list_ndx * sizeof(struct winbindd_gr)], 
               gr_mem_list, gr_mem_list_len);
 
-               safe_free(gr_mem_list);
+               SAFE_FREE(gr_mem_list);
 
        state->response.length += gr_mem_list_len;
 
-       DEBUG(10, ("getgrent(): returning %d groups, length = %d\n",
+       DEBUG(10, ("returning %d groups, length = %d\n",
                   group_list_ndx, gr_mem_list_len));
 
        /* Out of domains */
 
  done:
+
        return (group_list_ndx > 0) ? WINBINDD_OK : WINBINDD_ERROR;
 }
 
@@ -761,71 +726,65 @@ enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
 
 enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
 {
-        uint32 total_entries = 0;
-        struct winbindd_domain *domain;
-       struct getent_state groups;
+       uint32 total_entries = 0;
+       struct winbindd_domain *domain;
        char *extra_data = NULL;
+       char *ted = NULL;
        int extra_data_len = 0, i;
 
        DEBUG(3, ("[%5d]: list groups\n", state->pid));
 
-        /* Enumerate over trusted domains */
-
-        for (domain = domain_list; domain; domain = domain->next) {
+       /* Enumerate over trusted domains */
 
-               /* Skip domains other than WINBINDD_DOMAIN environment
-                  variable */ 
+       for (domain = domain_list(); domain; domain = domain->next) {
+               struct getent_state groups;
 
-               if ((strcmp(state->request.domain, "") != 0) &&
-                   !check_domain_env(state->request.domain, domain->name)) {
-                       continue;
-               }
+               ZERO_STRUCT(groups);
 
                /* Get list of sam groups */
-
                ZERO_STRUCT(groups);
-               groups.domain = domain;
+               fstrcpy(groups.domain_name, domain->name);
 
                get_sam_group_entries(&groups);
+                       
+               if (groups.num_sam_entries == 0) {
+                       /* this domain is empty or in an error state */
+                       continue;
+               }
 
-               if (groups.num_sam_entries == 0) continue;
-
-               /* Allocate some memory for extra data.  Note that we limit
-                  account names to sizeof(fstring) = 128 characters.  */
-
+               /* keep track the of the total number of groups seen so 
+                  far over all domains */
                total_entries += groups.num_sam_entries;
-               extra_data = Realloc(extra_data, 
-                                    sizeof(fstring) * total_entries);
-
-               if (!extra_data) {
+               
+               /* Allocate some memory for extra data.  Note that we limit
+                  account names to sizeof(fstring) = 128 characters.  */               
+                ted = Realloc(extra_data, sizeof(fstring) * total_entries);
+               if (!ted) {
+                       DEBUG(0,("failed to enlarge buffer!\n"));
+                       SAFE_FREE(extra_data);
                        return WINBINDD_ERROR;
-               }
+               } else
+                       extra_data = ted;
 
                /* Pack group list into extra data fields */
-
                for (i = 0; i < groups.num_sam_entries; i++) {
                        char *group_name = ((struct acct_info *)
                                            groups.sam_entries)[i].acct_name; 
                        fstring name;
 
-                       /* Convert unistring to ascii */
-
-                       snprintf(name, sizeof(name), "%s%s%s",
-                                domain->name, lp_winbind_separator(),
-                                group_name);
-
-                       /* Append to extra data */
-                       
+                       fill_domain_username(name, domain->name, group_name);
+                       /* Append to extra data */                      
                        memcpy(&extra_data[extra_data_len], name, 
-                              strlen(name));
+                               strlen(name));
                        extra_data_len += strlen(name);
-
                        extra_data[extra_data_len++] = ',';
                }
+
+               free(groups.sam_entries);
        }
 
        /* Assign extra_data fields in response structure */
-
        if (extra_data) {
                extra_data[extra_data_len - 1] = '\0';
                state->response.extra_data = extra_data;
@@ -835,7 +794,7 @@ enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
        /* No domains may have responded but that's still OK so don't
           return an error. */
 
-        return WINBINDD_OK;
+       return WINBINDD_OK;
 }
 
 /* Get user supplementary groups.  This is much quicker than trying to
@@ -843,84 +802,76 @@ enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
 
 enum winbindd_result winbindd_getgroups(struct winbindd_cli_state *state)
 {
-       fstring name_domain, name_user, name;
+       fstring name_domain, name_user;
        DOM_SID user_sid;
        enum SID_NAME_USE name_type;
        uint32 user_rid, num_groups, num_gids;
-       DOM_GID *user_groups = NULL;
+       NTSTATUS status;
+       uint32 *user_gids;
        struct winbindd_domain *domain;
-       enum winbindd_result result;
+       enum winbindd_result result = WINBINDD_ERROR;
        gid_t *gid_list;
        int i;
+       TALLOC_CTX *mem_ctx;
        
+       /* Ensure null termination */
+       state->request.data.username[sizeof(state->request.data.username)-1]='\0';
+
        DEBUG(3, ("[%5d]: getgroups %s\n", state->pid,
                  state->request.data.username));
 
-       if (state == NULL) return WINBINDD_ERROR;
+       if (!(mem_ctx = talloc_init_named("winbindd_getgroups(%s)",
+                                         state->request.data.username)))
+               return WINBINDD_ERROR;
 
        /* Parse domain and username */
 
-       parse_domain_user(state->request.data.username, name_domain, 
-                         name_user);
-
-       /* Reject names that don't have a domain - i.e name_domain contains 
-          the entire name. */
-       if (strequal(name_domain, "")) {
-               return WINBINDD_ERROR;
-       }
+       if (!parse_domain_user(state->request.data.username, name_domain, 
+                         name_user))
+               goto done;
 
        /* Get info for the domain */
        
        if ((domain = find_domain_from_name(name_domain)) == NULL) {
                DEBUG(0, ("could not find domain entry for domain %s\n", 
                          name_domain));
-               return WINBINDD_ERROR;
-       }
-
-       if (!domain_handles_open(domain)) {
-               return WINBINDD_ERROR;
+               goto done;
        }
 
-       slprintf(name, sizeof(name) - 1, "%s\\%s", name_domain, name_user);
-       
        /* Get rid and name type from name.  The following costs 1 packet */
 
-       if (!winbindd_lookup_sid_by_name(name, &user_sid, &name_type)) {
+       if (!winbindd_lookup_sid_by_name(domain, name_user, &user_sid, 
+                                        &name_type)) {
                DEBUG(1, ("user '%s' does not exist\n", name_user));
-               return WINBINDD_ERROR;
+               goto done;
        }
 
        if (name_type != SID_NAME_USER) {
-               DEBUG(1, ("name '%s' is not a user name: %d\n", name_user, 
-                         name_type));
-               return WINBINDD_ERROR;
+               DEBUG(1, ("name '%s' is not a user name: %d\n", 
+                         name_user, name_type));
+               goto done;
        }
 
        sid_split_rid(&user_sid, &user_rid);
 
-       if (!winbindd_lookup_usergroups(domain, user_rid, &num_groups,
-                                       &user_groups)) {
-               return WINBINDD_ERROR;
-       }
+       status = domain->methods->lookup_usergroups(domain, mem_ctx, user_rid, &num_groups, &user_gids);
+       if (!NT_STATUS_IS_OK(status)) goto done;
 
        /* Copy data back to client */
 
        num_gids = 0;
        gid_list = malloc(sizeof(gid_t) * num_groups);
 
-       if (state->response.extra_data) {
-               result = WINBINDD_ERROR;
+       if (state->response.extra_data)
                goto done;
-       }
 
        for (i = 0; i < num_groups; i++) {
-               if (!winbindd_idmap_get_gid_from_rid(
-                       domain->name, user_groups[i].g_rid
-                       &gid_list[num_gids])) {
+               if (!winbindd_idmap_get_gid_from_rid(domain->name, 
+                                                    user_gids[i]
+                                                    &gid_list[num_gids])) {
 
                        DEBUG(1, ("unable to convert group rid %d to gid\n", 
-                                 user_groups[i].g_rid));
+                                 user_gids[i]));
                        continue;
                }
                        
@@ -934,7 +885,8 @@ enum winbindd_result winbindd_getgroups(struct winbindd_cli_state *state)
        result = WINBINDD_OK;
 
  done:
-       safe_free(user_groups);
+
+       talloc_destroy(mem_ctx);
 
        return result;
 }