idl: Merge NETR_TRUST and LSA_TRUST definitions into one set only in lsa.idl
[amitay/samba.git] / source3 / winbindd / winbindd_util.c
index 9d38a9ee0c5ab602a1563bef1477a076d9104238..0b7e234c3b8263bb0f4493cca156c01b4b1c18fa 100644 (file)
 
 #include "includes.h"
 #include "winbindd.h"
+#include "secrets.h"
+#include "../libcli/security/security.h"
+#include "../libcli/auth/pam_errors.h"
+#include "passdb/machine_sid.h"
+#include "passdb.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
 
 extern struct winbindd_methods cache_methods;
-extern struct winbindd_methods builtin_passdb_methods;
-extern struct winbindd_methods sam_passdb_methods;
-
 
 /**
- * @file winbindd_util.c
+ * @file winbindd_util.cq
  *
  * Winbind daemon for NT domain authentication nss module.
  **/
@@ -45,14 +47,6 @@ extern struct winbindd_methods sam_passdb_methods;
 
 static struct winbindd_domain *_domain_list = NULL;
 
-/**
-   When was the last scan of trusted domains done?
-
-   0 == not ever
-*/
-
-static time_t last_trustdom_scan;
-
 struct winbindd_domain *domain_list(void)
 {
        /* Initialise list */
@@ -66,7 +60,7 @@ struct winbindd_domain *domain_list(void)
 
 /* Free all entries in the trusted domain list */
 
-void free_domain_list(void)
+static void free_domain_list(void)
 {
        struct winbindd_domain *domain = _domain_list;
 
@@ -74,44 +68,42 @@ void free_domain_list(void)
                struct winbindd_domain *next = domain->next;
 
                DLIST_REMOVE(_domain_list, domain);
-               SAFE_FREE(domain);
+               TALLOC_FREE(domain);
                domain = next;
        }
 }
 
-static bool is_internal_domain(const DOM_SID *sid)
+static bool is_internal_domain(const struct dom_sid *sid)
 {
        if (sid == NULL)
                return False;
 
-       if ( IS_DC )
-               return sid_check_is_builtin(sid);
-
-       return (sid_check_is_domain(sid) || sid_check_is_builtin(sid));
+       return (sid_check_is_our_sam(sid) || sid_check_is_builtin(sid));
 }
 
-static bool is_in_internal_domain(const DOM_SID *sid)
+static bool is_in_internal_domain(const struct dom_sid *sid)
 {
        if (sid == NULL)
                return False;
 
-       if ( IS_DC )
-               return sid_check_is_in_builtin(sid);
-
-       return (sid_check_is_in_our_domain(sid) || sid_check_is_in_builtin(sid));
+       return (sid_check_is_in_our_sam(sid) || sid_check_is_in_builtin(sid));
 }
 
 
-/* Add a trusted domain to our list of domains */
+/* Add a trusted domain to our list of domains.
+   If the domain already exists in the list,
+   return it and don't re-initialize.  */
+
 static struct winbindd_domain *add_trusted_domain(const char *domain_name, const char *alt_name,
                                                  struct winbindd_methods *methods,
-                                                 const DOM_SID *sid)
+                                                 const struct dom_sid *sid)
 {
        struct winbindd_domain *domain;
        const char *alternative_name = NULL;
        char *idmap_config_option;
        const char *param;
        const char **ignored_domains, **dom;
+       int role = lp_server_role();
 
        ignored_domains = lp_parm_string_list(-1, "winbind", "ignore domains", NULL);
        for (dom=ignored_domains; dom && *dom; dom++) {
@@ -121,9 +113,9 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
                }
        }
 
-       /* ignore alt_name if we are not in an AD domain */
+       /* use alt_name if available to allow DNS lookups */
 
-       if ( (lp_security() == SEC_ADS) && alt_name && *alt_name) {
+       if (alt_name && *alt_name) {
                alternative_name = alt_name;
        }
 
@@ -151,34 +143,52 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
                                continue;
                        }
 
-                       if (sid_equal(sid, &domain->sid)) {
+                       if (dom_sid_equal(sid, &domain->sid)) {
                                break;
                        }
                }
        }
 
-       /* See if we found a match.  Check if we need to update the
-          SID. */
-
-       if ( domain && sid) {
-               if ( sid_equal( &domain->sid, &global_sid_NULL ) )
+       if (domain != NULL) {
+               /*
+                * We found a match on domain->name or
+                * domain->alt_name. Possibly update the SID
+                * if the stored SID was the NULL SID
+                * and return the matching entry.
+                */
+               if ((sid != NULL)
+                   && dom_sid_equal(&domain->sid, &global_sid_NULL)) {
                        sid_copy( &domain->sid, sid );
-
+               }
                return domain;
        }
 
        /* Create new domain entry */
-
-       if ((domain = SMB_MALLOC_P(struct winbindd_domain)) == NULL)
+       domain = talloc_zero(NULL, struct winbindd_domain);
+       if (domain == NULL) {
                return NULL;
+       }
 
-       /* Fill in fields */
+       domain->children = talloc_zero_array(domain,
+                                            struct winbindd_child,
+                                            lp_winbind_max_domain_connections());
+       if (domain->children == NULL) {
+               TALLOC_FREE(domain);
+               return NULL;
+       }
 
-       ZERO_STRUCTP(domain);
+       domain->name = talloc_strdup(domain, domain_name);
+       if (domain->name == NULL) {
+               TALLOC_FREE(domain);
+               return NULL;
+       }
 
-       fstrcpy(domain->name, domain_name);
        if (alternative_name) {
-               fstrcpy(domain->alt_name, alternative_name);
+               domain->alt_name = talloc_strdup(domain, alternative_name);
+               if (domain->alt_name == NULL) {
+                       TALLOC_FREE(domain);
+                       return NULL;
+               }
        }
 
        domain->methods = methods;
@@ -194,6 +204,15 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
                sid_copy(&domain->sid, sid);
        }
 
+       /* Is this our primary domain ? */
+       if (strequal(domain_name, get_global_sam_name()) &&
+                       (role != ROLE_DOMAIN_MEMBER)) {
+               domain->primary = true;
+       } else if (strequal(domain_name, lp_workgroup()) &&
+                       (role == ROLE_DOMAIN_MEMBER)) {
+               domain->primary = true;
+       }
+
        /* Link to domain list */
        DLIST_ADD_END(_domain_list, domain, struct winbindd_domain *);
 
@@ -230,6 +249,8 @@ static struct winbindd_domain *add_trusted_domain(const char *domain_name, const
 
 done:
 
+       setup_domain_child(domain);
+
        DEBUG(2,("Added domain %s %s %s\n",
                 domain->name, domain->alt_name,
                 &domain->sid?sid_string_dbg(&domain->sid):""));
@@ -237,71 +258,64 @@ done:
        return domain;
 }
 
+bool domain_is_forest_root(const struct winbindd_domain *domain)
+{
+       const uint32_t fr_flags =
+               (NETR_TRUST_FLAG_TREEROOT|NETR_TRUST_FLAG_IN_FOREST);
+
+       return ((domain->domain_flags & fr_flags) == fr_flags);
+}
+
 /********************************************************************
   rescan our domains looking for new trusted domains
 ********************************************************************/
 
 struct trustdom_state {
-       TALLOC_CTX *mem_ctx;
-       bool primary;
-       bool forest_root;
-       struct winbindd_response *response;
+       struct winbindd_domain *domain;
+       struct winbindd_request request;
 };
 
-static void trustdom_recv(void *private_data, bool success);
+static void trustdom_list_done(struct tevent_req *req);
 static void rescan_forest_root_trusts( void );
 static void rescan_forest_trusts( void );
 
 static void add_trusted_domains( struct winbindd_domain *domain )
 {
-       TALLOC_CTX *mem_ctx;
-       struct winbindd_request *request;
-       struct winbindd_response *response;
-       uint32 fr_flags = (NETR_TRUST_FLAG_TREEROOT|NETR_TRUST_FLAG_IN_FOREST);
-
        struct trustdom_state *state;
+       struct tevent_req *req;
 
-       mem_ctx = talloc_init("add_trusted_domains");
-       if (mem_ctx == NULL) {
-               DEBUG(0, ("talloc_init failed\n"));
+       state = talloc_zero(NULL, struct trustdom_state);
+       if (state == NULL) {
+               DEBUG(0, ("talloc failed\n"));
                return;
        }
+       state->domain = domain;
 
-       request = TALLOC_ZERO_P(mem_ctx, struct winbindd_request);
-       response = TALLOC_P(mem_ctx, struct winbindd_response);
-       state = TALLOC_P(mem_ctx, struct trustdom_state);
+       state->request.length = sizeof(state->request);
+       state->request.cmd = WINBINDD_LIST_TRUSTDOM;
 
-       if ((request == NULL) || (response == NULL) || (state == NULL)) {
-               DEBUG(0, ("talloc failed\n"));
-               talloc_destroy(mem_ctx);
+       req = wb_domain_request_send(state, winbind_event_context(),
+                                    domain, &state->request);
+       if (req == NULL) {
+               DEBUG(1, ("wb_domain_request_send failed\n"));
+               TALLOC_FREE(state);
                return;
        }
-
-       state->mem_ctx = mem_ctx;
-       state->response = response;
-
-       /* Flags used to know how to continue the forest trust search */
-
-       state->primary = domain->primary;
-       state->forest_root = ((domain->domain_flags & fr_flags) == fr_flags );
-
-       request->length = sizeof(*request);
-       request->cmd = WINBINDD_LIST_TRUSTDOM;
-
-       async_domain_request(mem_ctx, domain, request, response,
-                            trustdom_recv, state);
+       tevent_req_set_callback(req, trustdom_list_done, state);
 }
 
-static void trustdom_recv(void *private_data, bool success)
+static void trustdom_list_done(struct tevent_req *req)
 {
-       struct trustdom_state *state =
-               talloc_get_type_abort(private_data, struct trustdom_state);
-       struct winbindd_response *response = state->response;
+       struct trustdom_state *state = tevent_req_callback_data(
+               req, struct trustdom_state);
+       struct winbindd_response *response;
+       int res, err;
        char *p;
 
-       if ((!success) || (response->result != WINBINDD_OK)) {
+       res = wb_domain_request_recv(req, state, &response, &err);
+       if ((res == -1) || (response->result != WINBINDD_OK)) {
                DEBUG(1, ("Could not receive trustdoms\n"));
-               talloc_destroy(state->mem_ctx);
+               TALLOC_FREE(state);
                return;
        }
 
@@ -309,8 +323,7 @@ static void trustdom_recv(void *private_data, bool success)
 
        while ((p != NULL) && (*p != '\0')) {
                char *q, *sidstr, *alt_name;
-               DOM_SID sid;
-               struct winbindd_domain *domain;
+               struct dom_sid sid;
                char *alternate_name = NULL;
 
                alt_name = strchr(p, '\\');
@@ -336,13 +349,8 @@ static void trustdom_recv(void *private_data, bool success)
                        *q = '\0';
 
                if (!string_to_sid(&sid, sidstr)) {
-                       /* Allow NULL sid for sibling domains */
-                       if ( strcmp(sidstr,"S-0-0") == 0) {
-                               sid_copy( &sid, &global_sid_NULL);
-                       } else {
-                               DEBUG(0, ("Got invalid trustdom response\n"));
-                               break;
-                       }
+                       DEBUG(0, ("Got invalid trustdom response\n"));
+                       break;
                }
 
                /* use the real alt_name if we have one, else pass in NULL */
@@ -350,31 +358,21 @@ static void trustdom_recv(void *private_data, bool success)
                if ( !strequal( alt_name, "(null)" ) )
                        alternate_name = alt_name;
 
-               /* If we have an existing domain structure, calling
-                  add_trusted_domain() will update the SID if
-                  necessary.  This is important because we need the
-                  SID for sibling domains */
+               /*
+                * We always call add_trusted_domain() cause on an existing
+                * domain structure, it will update the SID if necessary.
+                * This is important because we need the SID for sibling
+                * domains.
+                */
+               (void)add_trusted_domain(p, alternate_name,
+                                           &cache_methods,
+                                           &sid);
 
-               if ( find_domain_from_name_noinit(p) != NULL ) {
-                       domain = add_trusted_domain(p, alternate_name,
-                                                   &cache_methods,
-                                                   &sid);
-               } else {
-                       domain = add_trusted_domain(p, alternate_name,
-                                                   &cache_methods,
-                                                   &sid);
-                       if (domain) {
-                               setup_domain_child(domain,
-                                                  &domain->child);
-                       }
-               }
                p=q;
                if (p != NULL)
                        p += 1;
        }
 
-       SAFE_FREE(response->extra_data.data);
-
        /*
           Cases to consider when scanning trusts:
           (a) we are calling from a child domain (primary && !forest_root)
@@ -383,23 +381,23 @@ static void trustdom_recv(void *private_data, bool success)
               && !forest_root)
        */
 
-       if ( state->primary ) {
+       if (state->domain->primary) {
                /* If this is our primary domain and we are not in the
                   forest root, we have to scan the root trusts first */
 
-               if ( !state->forest_root )
+               if (!domain_is_forest_root(state->domain))
                        rescan_forest_root_trusts();
                else
                        rescan_forest_trusts();
 
-       } else if ( state->forest_root ) {
+       } else if (domain_is_forest_root(state->domain)) {
                /* Once we have done root forest trust search, we can
                   go on to search the trusted forests */
 
                rescan_forest_trusts();
        }
 
-       talloc_destroy(state->mem_ctx);
+       TALLOC_FREE(state);
 
        return;
 }
@@ -501,8 +499,8 @@ static void rescan_forest_trusts( void )
                        continue;
 
                if ( (flags & NETR_TRUST_FLAG_INBOUND) &&
-                    (type == NETR_TRUST_TYPE_UPLEVEL) &&
-                    (attribs == NETR_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) )
+                    (type == LSA_TRUST_TYPE_UPLEVEL) &&
+                    (attribs == LSA_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) )
                {
                        /* add the trusted domain if we don't know
                           about it */
@@ -537,19 +535,10 @@ static void rescan_forest_trusts( void )
  (c) ask the a DC in any Win2003 trusted forests
 *********************************************************************/
 
-void rescan_trusted_domains( void )
+void rescan_trusted_domains(struct tevent_context *ev, struct tevent_timer *te,
+                           struct timeval now, void *private_data)
 {
-       time_t now = time(NULL);
-
-       /* Check that we allow trusted domains at all */
-       if (!lp_allow_trusted_domains())
-               return;
-
-       /* see if the time has come... */
-
-       if ((now >= last_trustdom_scan) &&
-           ((now-last_trustdom_scan) < WINBINDD_RESCAN_FREQ) )
-               return;
+       TALLOC_FREE(te);
 
        /* I use to clear the cache here and start over but that
           caused problems in child processes that needed the
@@ -564,160 +553,31 @@ void rescan_trusted_domains( void )
 
        add_trusted_domains( find_our_domain() );
 
-       last_trustdom_scan = now;
+       te = tevent_add_timer(
+               ev, NULL, timeval_current_ofs(WINBINDD_RESCAN_FREQ, 0),
+               rescan_trusted_domains, NULL);
+       /*
+        * If te == NULL, there's not much we can do here. Don't fail, the
+        * only thing we miss is new trusted domains.
+        */
 
        return;
 }
 
-struct init_child_state {
-       TALLOC_CTX *mem_ctx;
-       struct winbindd_domain *domain;
-       struct winbindd_request *request;
-       struct winbindd_response *response;
-       void (*continuation)(void *private_data, bool success);
-       void *private_data;
-};
-
-static void init_child_recv(void *private_data, bool success);
-static void init_child_getdc_recv(void *private_data, bool success);
-
-enum winbindd_result init_child_connection(struct winbindd_domain *domain,
-                                          void (*continuation)(void *private_data,
-                                                               bool success),
-                                          void *private_data)
-{
-       TALLOC_CTX *mem_ctx;
-       struct winbindd_request *request;
-       struct winbindd_response *response;
-       struct init_child_state *state;
-       struct winbindd_domain *request_domain;
-
-       mem_ctx = talloc_init("init_child_connection");
-       if (mem_ctx == NULL) {
-               DEBUG(0, ("talloc_init failed\n"));
-               return WINBINDD_ERROR;
-       }
-
-       request = TALLOC_ZERO_P(mem_ctx, struct winbindd_request);
-       response = TALLOC_P(mem_ctx, struct winbindd_response);
-       state = TALLOC_P(mem_ctx, struct init_child_state);
-
-       if ((request == NULL) || (response == NULL) || (state == NULL)) {
-               DEBUG(0, ("talloc failed\n"));
-               TALLOC_FREE(mem_ctx);
-               continuation(private_data, False);
-               return WINBINDD_ERROR;
-       }
-
-       request->length = sizeof(*request);
-
-       state->mem_ctx = mem_ctx;
-       state->domain = domain;
-       state->request = request;
-       state->response = response;
-       state->continuation = continuation;
-       state->private_data = private_data;
-
-       if (IS_DC || domain->primary || domain->internal ) {
-               /* The primary domain has to find the DC name itself */
-               request->cmd = WINBINDD_INIT_CONNECTION;
-               fstrcpy(request->domain_name, domain->name);
-               request->data.init_conn.is_primary = domain->primary ? true : false;
-               fstrcpy(request->data.init_conn.dcname, "");
-               async_request(mem_ctx, &domain->child, request, response,
-                             init_child_recv, state);
-               return WINBINDD_PENDING;
-       }
-
-       /* This is *not* the primary domain, let's ask our DC about a DC
-        * name */
-
-       request->cmd = WINBINDD_GETDCNAME;
-       fstrcpy(request->domain_name, domain->name);
-
-       request_domain = find_our_domain();
-       async_domain_request(mem_ctx, request_domain, request, response,
-                            init_child_getdc_recv, state);
-       return WINBINDD_PENDING;
-}
-
-static void init_child_getdc_recv(void *private_data, bool success)
-{
-       struct init_child_state *state =
-               talloc_get_type_abort(private_data, struct init_child_state);
-       const char *dcname = "";
-
-       DEBUG(10, ("Received getdcname response\n"));
-
-       if (success && (state->response->result == WINBINDD_OK)) {
-               dcname = state->response->data.dc_name;
-       }
-
-       state->request->cmd = WINBINDD_INIT_CONNECTION;
-       fstrcpy(state->request->domain_name, state->domain->name);
-       state->request->data.init_conn.is_primary = False;
-       fstrcpy(state->request->data.init_conn.dcname, dcname);
-
-       async_request(state->mem_ctx, &state->domain->child,
-                     state->request, state->response,
-                     init_child_recv, state);
-}
-
-static void init_child_recv(void *private_data, bool success)
-{
-       struct init_child_state *state =
-               talloc_get_type_abort(private_data, struct init_child_state);
-
-       DEBUG(5, ("Received child initialization response for domain %s\n",
-                 state->domain->name));
-
-       if ((!success) || (state->response->result != WINBINDD_OK)) {
-               DEBUG(3, ("Could not init child\n"));
-               state->continuation(state->private_data, False);
-               talloc_destroy(state->mem_ctx);
-               return;
-       }
-
-       fstrcpy(state->domain->name,
-               state->response->data.domain_info.name);
-       fstrcpy(state->domain->alt_name,
-               state->response->data.domain_info.alt_name);
-       if (!string_to_sid(&state->domain->sid,
-                     state->response->data.domain_info.sid)) {
-               DEBUG(1,("init_child_recv: Could not convert sid %s "
-                       "from string\n",
-                       state->response->data.domain_info.sid));
-               state->continuation(state->private_data, False);
-               talloc_destroy(state->mem_ctx);
-               return;
-       }
-
-       state->domain->native_mode =
-               state->response->data.domain_info.native_mode;
-       state->domain->active_directory =
-               state->response->data.domain_info.active_directory;
-
-       init_dc_connection(state->domain);
-
-       if (state->continuation != NULL)
-               state->continuation(state->private_data, True);
-       talloc_destroy(state->mem_ctx);
-}
-
 enum winbindd_result winbindd_dual_init_connection(struct winbindd_domain *domain,
                                                   struct winbindd_cli_state *state)
 {
        /* Ensure null termination */
-       state->request.domain_name
-               [sizeof(state->request.domain_name)-1]='\0';
-       state->request.data.init_conn.dcname
-               [sizeof(state->request.data.init_conn.dcname)-1]='\0';
+       state->request->domain_name
+               [sizeof(state->request->domain_name)-1]='\0';
+       state->request->data.init_conn.dcname
+               [sizeof(state->request->data.init_conn.dcname)-1]='\0';
 
-       if (strlen(state->request.data.init_conn.dcname) > 0) {
-               fstrcpy(domain->dcname, state->request.data.init_conn.dcname);
+       if (strlen(state->request->data.init_conn.dcname) > 0) {
+               fstrcpy(domain->dcname, state->request->data.init_conn.dcname);
        }
 
-       init_dc_connection(domain);
+       init_dc_connection(domain, false);
 
        if (!domain->initialized) {
                /* If we return error here we can't do any cached authentication,
@@ -729,15 +589,15 @@ enum winbindd_result winbindd_dual_init_connection(struct winbindd_domain *domai
                        "online = %d\n", domain->name, (int)domain->online ));
        }
 
-       fstrcpy(state->response.data.domain_info.name, domain->name);
-       fstrcpy(state->response.data.domain_info.alt_name, domain->alt_name);
-       sid_to_fstring(state->response.data.domain_info.sid, &domain->sid);
+       fstrcpy(state->response->data.domain_info.name, domain->name);
+       fstrcpy(state->response->data.domain_info.alt_name, domain->alt_name);
+       sid_to_fstring(state->response->data.domain_info.sid, &domain->sid);
 
-       state->response.data.domain_info.native_mode
+       state->response->data.domain_info.native_mode
                = domain->native_mode;
-       state->response.data.domain_info.active_directory
+       state->response->data.domain_info.active_directory
                = domain->active_directory;
-       state->response.data.domain_info.primary
+       state->response->data.domain_info.primary
                = domain->primary;
 
        return WINBINDD_OK;
@@ -746,7 +606,6 @@ enum winbindd_result winbindd_dual_init_connection(struct winbindd_domain *domai
 /* Look up global info for the winbind daemon */
 bool init_domain_list(void)
 {
-       struct winbindd_domain *domain;
        int role = lp_server_role();
 
        /* Free existing list */
@@ -754,29 +613,49 @@ bool init_domain_list(void)
 
        /* BUILTIN domain */
 
-       domain = add_trusted_domain("BUILTIN", NULL, &builtin_passdb_methods,
+       (void)add_trusted_domain("BUILTIN", NULL, &cache_methods,
                                    &global_sid_Builtin);
-       if (domain) {
-               setup_domain_child(domain,
-                                  &domain->child);
-       }
 
        /* Local SAM */
 
-       domain = add_trusted_domain(get_global_sam_name(), NULL,
-                                   &sam_passdb_methods, get_global_sam_sid());
-       if (domain) {
-               if ( role != ROLE_DOMAIN_MEMBER ) {
-                       domain->primary = True;
+       if ( role == ROLE_ACTIVE_DIRECTORY_DC ) {
+               struct winbindd_domain *domain;
+               enum netr_SchannelType sec_chan_type;
+               const char *account_name;
+               struct samr_Password current_nt_hash;
+               bool ok;
+
+               domain = add_trusted_domain(get_global_sam_name(), lp_dnsdomain(),
+                                           &cache_methods, get_global_sam_sid());
+               if (domain == NULL) {
+                       DEBUG(0, ("Failed to add our own, local AD domain to winbindd's internal list\n"));
+                       return false;
+               }
+
+               /*
+                * We need to call this to find out if we are an RODC
+                */
+               ok = get_trust_pw_hash(domain->name,
+                                      current_nt_hash.hash,
+                                      &account_name,
+                                      &sec_chan_type);
+               if (!ok) {
+                       DEBUG(0, ("Failed to fetch our own, local AD domain join password for winbindd's internal use\n"));
+                       return false;
+               }
+               if (sec_chan_type == SEC_CHAN_RODC) {
+                       domain->rodc = true;
                }
-               setup_domain_child(domain,
-                                  &domain->child);
-       }
 
+       } else {
+               (void)add_trusted_domain(get_global_sam_name(), NULL,
+                                        &cache_methods, get_global_sam_sid());
+       }
        /* Add ourselves as the first entry. */
 
        if ( role == ROLE_DOMAIN_MEMBER ) {
-               DOM_SID our_sid;
+               struct winbindd_domain *domain;
+               struct dom_sid our_sid;
 
                if (!secrets_fetch_domain_sid(lp_workgroup(), &our_sid)) {
                        DEBUG(0, ("Could not fetch our SID - did we join?\n"));
@@ -786,10 +665,6 @@ bool init_domain_list(void)
                domain = add_trusted_domain( lp_workgroup(), lp_realm(),
                                             &cache_methods, &our_sid);
                if (domain) {
-                       domain->primary = True;
-                       setup_domain_child(domain,
-                                          &domain->child);
-
                        /* Even in the parent winbindd we'll need to
                           talk to the DC, so try and see if we can
                           contact it. Theoretically this isn't neccessary
@@ -803,50 +678,6 @@ bool init_domain_list(void)
        return True;
 }
 
-void check_domain_trusted( const char *name, const DOM_SID *user_sid )
-{
-       struct winbindd_domain *domain;
-       DOM_SID dom_sid;
-       uint32 rid;
-
-       /* Check if we even care */
-
-       if (!lp_allow_trusted_domains())
-               return;
-
-       domain = find_domain_from_name_noinit( name );
-       if ( domain )
-               return;
-
-       sid_copy( &dom_sid, user_sid );
-       if ( !sid_split_rid( &dom_sid, &rid ) )
-               return;
-
-       /* add the newly discovered trusted domain */
-
-       domain = add_trusted_domain( name, NULL, &cache_methods,
-                                    &dom_sid);
-
-       if ( !domain )
-               return;
-
-       /* assume this is a trust from a one-way transitive
-          forest trust */
-
-       domain->active_directory = True;
-       domain->domain_flags = NETR_TRUST_FLAG_OUTBOUND;
-       domain->domain_type  = NETR_TRUST_TYPE_UPLEVEL;
-       domain->internal = False;
-       domain->online = True;
-
-       setup_domain_child(domain,
-                          &domain->child);
-
-       wcache_tdc_add_domain( domain );
-
-       return;
-}
-
 /**
  * Given a domain name, return the struct winbindd domain info for it
  *
@@ -867,7 +698,7 @@ struct winbindd_domain *find_domain_from_name_noinit(const char *domain_name)
 
        for (domain = domain_list(); domain != NULL; domain = domain->next) {
                if (strequal(domain_name, domain->name) ||
-                   (domain->alt_name[0] &&
+                   (domain->alt_name != NULL &&
                     strequal(domain_name, domain->alt_name))) {
                        return domain;
                }
@@ -888,21 +719,21 @@ struct winbindd_domain *find_domain_from_name(const char *domain_name)
                return NULL;
 
        if (!domain->initialized)
-               init_dc_connection(domain);
+               init_dc_connection(domain, false);
 
        return domain;
 }
 
 /* Given a domain sid, return the struct winbindd domain info for it */
 
-struct winbindd_domain *find_domain_from_sid_noinit(const DOM_SID *sid)
+struct winbindd_domain *find_domain_from_sid_noinit(const struct dom_sid *sid)
 {
        struct winbindd_domain *domain;
 
        /* Search through list */
 
        for (domain = domain_list(); domain != NULL; domain = domain->next) {
-               if (sid_compare_domain(sid, &domain->sid) == 0)
+               if (dom_sid_compare_domain(sid, &domain->sid) == 0)
                        return domain;
        }
 
@@ -913,7 +744,7 @@ struct winbindd_domain *find_domain_from_sid_noinit(const DOM_SID *sid)
 
 /* Given a domain sid, return the struct winbindd domain info for it */
 
-struct winbindd_domain *find_domain_from_sid(const DOM_SID *sid)
+struct winbindd_domain *find_domain_from_sid(const struct dom_sid *sid)
 {
        struct winbindd_domain *domain;
 
@@ -923,7 +754,7 @@ struct winbindd_domain *find_domain_from_sid(const DOM_SID *sid)
                return NULL;
 
        if (!domain->initialized)
-               init_dc_connection(domain);
+               init_dc_connection(domain, false);
 
        return domain;
 }
@@ -947,23 +778,18 @@ struct winbindd_domain *find_root_domain(void)
 {
        struct winbindd_domain *ours = find_our_domain();
 
-       if ( !ours )
-               return NULL;
-
-       if ( strlen(ours->forest_name) == 0 )
+       if (ours->forest_name == NULL) {
                return NULL;
+       }
 
        return find_domain_from_name( ours->forest_name );
 }
 
 struct winbindd_domain *find_builtin_domain(void)
 {
-       DOM_SID sid;
        struct winbindd_domain *domain;
 
-       string_to_sid(&sid, "S-1-5-32");
-       domain = find_domain_from_sid(&sid);
-
+       domain = find_domain_from_sid(&global_sid_Builtin);
        if (domain == NULL) {
                smb_panic("Could not find BUILTIN domain");
        }
@@ -973,7 +799,7 @@ struct winbindd_domain *find_builtin_domain(void)
 
 /* Find the appropriate domain to lookup a name or SID */
 
-struct winbindd_domain *find_lookup_domain_from_sid(const DOM_SID *sid)
+struct winbindd_domain *find_lookup_domain_from_sid(const struct dom_sid *sid)
 {
        /* SIDs in the S-1-22-{1,2} domain should be handled by our passdb */
 
@@ -1008,6 +834,10 @@ struct winbindd_domain *find_lookup_domain_from_name(const char *domain_name)
        if ( strequal(domain_name, unix_users_domain_name() ) ||
             strequal(domain_name, unix_groups_domain_name() ) )
        {
+               /*
+                * The "Unix User" and "Unix Group" domain our handled by
+                * passdb
+                */
                return find_domain_from_name_noinit( get_global_sam_name() );
        }
 
@@ -1015,95 +845,10 @@ struct winbindd_domain *find_lookup_domain_from_name(const char *domain_name)
            strequal(domain_name, get_global_sam_name()))
                return find_domain_from_name_noinit(domain_name);
 
-       /* The "Unix User" and "Unix Group" domain our handled by passdb */
 
        return find_our_domain();
 }
 
-/* Lookup a sid in a domain from a name */
-
-bool winbindd_lookup_sid_by_name(TALLOC_CTX *mem_ctx,
-                                enum winbindd_cmd orig_cmd,
-                                struct winbindd_domain *domain,
-                                const char *domain_name,
-                                const char *name, DOM_SID *sid,
-                                enum lsa_SidType *type)
-{
-       NTSTATUS result;
-
-       /* Lookup name */
-       result = domain->methods->name_to_sid(domain, mem_ctx, orig_cmd,
-                                             domain_name, name, sid, type);
-
-       /* Return sid and type if lookup successful */
-       if (!NT_STATUS_IS_OK(result)) {
-               *type = SID_NAME_UNKNOWN;
-       }
-
-       return NT_STATUS_IS_OK(result);
-}
-
-/**
- * @brief Lookup a name in a domain from a sid.
- *
- * @param sid Security ID you want to look up.
- * @param name On success, set to the name corresponding to @p sid.
- * @param dom_name On success, set to the 'domain name' corresponding to @p sid.
- * @param type On success, contains the type of name: alias, group or
- * user.
- * @retval True if the name exists, in which case @p name and @p type
- * are set, otherwise False.
- **/
-bool winbindd_lookup_name_by_sid(TALLOC_CTX *mem_ctx,
-                                struct winbindd_domain *domain,
-                                DOM_SID *sid,
-                                char **dom_name,
-                                char **name,
-                                enum lsa_SidType *type)
-{
-       NTSTATUS result;
-
-       *dom_name = NULL;
-       *name = NULL;
-
-       /* Lookup name */
-
-       result = domain->methods->sid_to_name(domain, mem_ctx, sid, dom_name, name, type);
-
-       /* Return name and type if successful */
-
-       if (NT_STATUS_IS_OK(result)) {
-               return True;
-       }
-
-       *type = SID_NAME_UNKNOWN;
-
-       return False;
-}
-
-/* Free state information held for {set,get,end}{pw,gr}ent() functions */
-
-void free_getent_state(struct getent_state *state)
-{
-       struct getent_state *temp;
-
-       /* Iterate over state list */
-
-       temp = state;
-
-       while(temp != NULL) {
-               struct getent_state *next = temp->next;
-
-               /* Free sam entries then list entry */
-
-               SAFE_FREE(state->sam_entries);
-               DLIST_REMOVE(state, state);
-
-               SAFE_FREE(temp);
-               temp = next;
-       }
-}
-
 /* Is this a domain which we may assume no DOMAIN\ prefix? */
 
 static bool assume_domain(const char *domain)
@@ -1144,7 +889,8 @@ bool parse_domain_user(const char *domuser, fstring domain, fstring user)
                if ( assume_domain(lp_workgroup())) {
                        fstrcpy(domain, lp_workgroup());
                } else if ((p = strchr(domuser, '@')) != NULL) {
-                       fstrcpy(domain, "");
+                       fstrcpy(domain, p + 1);
+                       user[PTR_DIFF(p, domuser)] = 0;
                } else {
                        return False;
                }
@@ -1154,9 +900,7 @@ bool parse_domain_user(const char *domuser, fstring domain, fstring user)
                domain[PTR_DIFF(p, domuser)] = 0;
        }
 
-       strupper_m(domain);
-
-       return True;
+       return strupper_m(domain);
 }
 
 bool parse_domain_user_talloc(TALLOC_CTX *mem_ctx, const char *domuser,
@@ -1171,31 +915,6 @@ bool parse_domain_user_talloc(TALLOC_CTX *mem_ctx, const char *domuser,
        return ((*domain != NULL) && (*user != NULL));
 }
 
-/* add a domain user name to a buffer */
-void parse_add_domuser(void *buf, char *domuser, int *len)
-{
-       fstring domain;
-       char *p, *user;
-
-       user = domuser;
-       p = strchr(domuser, *lp_winbind_separator());
-
-       if (p) {
-
-               fstrcpy(domain, domuser);
-               domain[PTR_DIFF(p, domuser)] = 0;
-               p++;
-
-               if (assume_domain(domain)) {
-
-                       user = p;
-                       *len -= (PTR_DIFF(p, domuser));
-               }
-       }
-
-       safe_strcpy((char *)buf, user, *len);
-}
-
 /* Ensure an incoming username from NSS is fully qualified. Replace the
    incoming fstring with DOMAIN <separator> user. Returns the same
    values as parse_domain_user() but also replaces the incoming username.
@@ -1235,7 +954,7 @@ void fill_domain_username(fstring name, const char *domain, const char *user, bo
        fstring tmp_user;
 
        fstrcpy(tmp_user, user);
-       strlower_m(tmp_user);
+       (void)strlower_m(tmp_user);
 
        if (can_assume && assume_domain(domain)) {
                strlcpy(name, tmp_user, sizeof(fstring));
@@ -1258,7 +977,10 @@ char *fill_domain_username_talloc(TALLOC_CTX *mem_ctx,
        char *tmp_user, *name;
 
        tmp_user = talloc_strdup(mem_ctx, user);
-       strlower_m(tmp_user);
+       if (!strlower_m(tmp_user)) {
+               TALLOC_FREE(tmp_user);
+               return NULL;
+       }
 
        if (can_assume && assume_domain(domain)) {
                name = tmp_user;
@@ -1273,49 +995,6 @@ char *fill_domain_username_talloc(TALLOC_CTX *mem_ctx,
        return name;
 }
 
-/*
- * Winbindd socket accessor functions
- */
-
-const char *get_winbind_pipe_dir(void)
-{
-       return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
-}
-
-char *get_winbind_priv_pipe_dir(void)
-{
-       return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
-}
-
-/* Open the winbindd socket */
-
-static int _winbindd_socket = -1;
-static int _winbindd_priv_socket = -1;
-
-int open_winbindd_socket(void)
-{
-       if (_winbindd_socket == -1) {
-               _winbindd_socket = create_pipe_sock(
-                       get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
-               DEBUG(10, ("open_winbindd_socket: opened socket fd %d\n",
-                          _winbindd_socket));
-       }
-
-       return _winbindd_socket;
-}
-
-int open_winbindd_priv_socket(void)
-{
-       if (_winbindd_priv_socket == -1) {
-               _winbindd_priv_socket = create_pipe_sock(
-                       get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
-               DEBUG(10, ("open_winbindd_priv_socket: opened socket fd %d\n",
-                          _winbindd_priv_socket));
-       }
-
-       return _winbindd_priv_socket;
-}
-
 /*
  * Client list accessor functions
  */
@@ -1346,23 +1025,6 @@ void winbindd_remove_client(struct winbindd_cli_state *cli)
        _num_clients--;
 }
 
-/* Close all open clients */
-
-void winbindd_kill_all_clients(void)
-{
-       struct winbindd_cli_state *cl = winbindd_client_list();
-
-       DEBUG(10, ("winbindd_kill_all_clients: going postal\n"));
-
-       while (cl) {
-               struct winbindd_cli_state *next;
-
-               next = cl->next;
-               winbindd_remove_client(cl);
-               cl = next;
-       }
-}
-
 /* Return number of open clients */
 
 int winbindd_num_clients(void)
@@ -1372,12 +1034,12 @@ int winbindd_num_clients(void)
 
 NTSTATUS lookup_usergroups_cached(struct winbindd_domain *domain,
                                  TALLOC_CTX *mem_ctx,
-                                 const DOM_SID *user_sid,
-                                 uint32 *p_num_groups, DOM_SID **user_sids)
+                                 const struct dom_sid *user_sid,
+                                 uint32_t *p_num_groups, struct dom_sid **user_sids)
 {
        struct netr_SamInfo3 *info3 = NULL;
        NTSTATUS status = NT_STATUS_NO_MEMORY;
-       size_t num_groups = 0;
+       uint32_t num_groups = 0;
 
        DEBUG(3,(": lookup_usergroups_cached\n"));
 
@@ -1395,12 +1057,18 @@ NTSTATUS lookup_usergroups_cached(struct winbindd_domain *domain,
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       /* Skip Domain local groups outside our domain.
-          We'll get these from the getsidaliases() RPC call. */
+       /*
+        * Before bug #7843 the "Domain Local" groups were added with a
+        * lookupuseraliases call, but this isn't done anymore for our domain
+        * so we need to resolve resource groups here.
+        *
+        * When to use Resource Groups:
+        * http://technet.microsoft.com/en-us/library/cc753670%28v=WS.10%29.aspx
+        */
        status = sid_array_from_info3(mem_ctx, info3,
                                      user_sids,
                                      &num_groups,
-                                     false, true);
+                                     false);
 
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(info3);
@@ -1422,7 +1090,7 @@ NTSTATUS lookup_usergroups_cached(struct winbindd_domain *domain,
 
 NTSTATUS normalize_name_map(TALLOC_CTX *mem_ctx,
                             struct winbindd_domain *domain,
-                            char *name,
+                            const char *name,
                             char **normalized)
 {
        NTSTATUS nt_status;
@@ -1535,7 +1203,8 @@ bool winbindd_can_contact_domain(struct winbindd_domain *domain)
        /* We can contact the domain if it is our primary domain */
 
        if (domain->primary) {
-               return true;
+               ret = true;
+               goto done;
        }
 
        /* Trust the TDC cache and not the winbindd_domain flags */
@@ -1543,7 +1212,8 @@ bool winbindd_can_contact_domain(struct winbindd_domain *domain)
        if ((tdc = wcache_tdc_fetch_domain(frame, domain->name)) == NULL) {
                DEBUG(10,("winbindd_can_contact_domain: %s not found in cache\n",
                          domain->name));
-               return false;
+               ret = false;
+               goto done;
        }
 
        /* Can always contact a domain that is in out forest */
@@ -1696,3 +1366,59 @@ void set_auth_errors(struct winbindd_response *resp, NTSTATUS result)
                        get_friendly_nt_error_msg(result));
        resp->data.auth.pam_error = nt_status_to_pam(result);
 }
+
+bool is_domain_offline(const struct winbindd_domain *domain)
+{
+       if (!lp_winbind_offline_logon()) {
+               return false;
+       }
+       if (get_global_winbindd_state_offline()) {
+               return true;
+       }
+       return !domain->online;
+}
+
+bool is_domain_online(const struct winbindd_domain *domain)
+{
+       return !is_domain_offline(domain);
+}
+
+/**
+ * Parse an char array into a list of sids.
+ *
+ * The input sidstr should consist of 0-terminated strings
+ * representing sids, separated by newline characters '\n'.
+ * The list is terminated by an empty string, i.e.
+ * character '\0' directly following a character '\n'
+ * (or '\0' right at the start of sidstr).
+ */
+bool parse_sidlist(TALLOC_CTX *mem_ctx, const char *sidstr,
+                  struct dom_sid **sids, uint32_t *num_sids)
+{
+       const char *p;
+
+       p = sidstr;
+       if (p == NULL)
+               return False;
+
+       while (p[0] != '\0') {
+               struct dom_sid sid;
+               const char *q = NULL;
+
+               if (!dom_sid_parse_endp(p, &sid, &q)) {
+                       DEBUG(1, ("Could not parse sid %s\n", p));
+                       return false;
+               }
+               if ((q == NULL) || (q[0] != '\n')) {
+                       DEBUG(1, ("Got invalid sidstr: %s\n", p));
+                       return false;
+               }
+               if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &sid, sids,
+                                                     num_sids)))
+               {
+                       return False;
+               }
+               p = q+1;
+       }
+       return True;
+}