(merge from 3.0)

auth/auth_util.c:
 - Fill in the 'backup' idea of a domain, if the DC didn't supply one.  This
   doesn't seem to occour in reality, hence why we missed the typo.

lib/charcnv.c:
lib/smbldap.c:
libads/ldap.c:
libsmb/libsmbclient.c:
printing/nt_printing.c:
 - all the callers to pull_utf8_allocate() pass a char ** as the first
   parammeter, so don't make them all cast it to a void **

nsswitch/winbind_util.c:
 - Allow for a more 'correct' view of when usernames should be qualified
   in winbindd.  If we are a PDC, or have 'winbind trusted domains only',
   then for the authentication returns stip the domain portion.
 - Fix valgrind warning about use of free()ed name when looking up our
   local domain.  lp_workgroup() is maniplated inside a procedure that
   uses it's former value.  Instead, use the fact that our local domain is
   always the first in the list.

--

Jerry rightly complained that we can't assume that the first domain is
our primary domain - new domains are added to the front of the list. :-(

Use a much more reliable 'flag test' instead.  (note:  changes winbind
structures, make clean).

--

Forgot to commit this for the 'get our primary domain' change.

Andrew Bartlett
(This used to be commit acacd27ba25f7ebfec40bfa66d34ece543569e23)

2 files changed, 66 insertions, 15 deletions

diff --git a/source3/nsswitch/winbindd.h b/source3/nsswitch/winbindd.h
index 677afa1849..f1a58ab451 100644
--- a/source3/nsswitch/winbindd.h
+++ b/source3/nsswitch/winbindd.h
@@ -96,6 +96,7 @@ struct winbindd_domain {
 	fstring alt_name;                      /* alt Domain name (if any) */
 	DOM_SID sid;                           /* SID for this domain */
 	BOOL native_mode;                      /* is this a win2k domain in native mode ? */
+	BOOL primary;                           /* is this our primary domain ? */
 
 	/* Lookup methods for this domain (LDAP or RPC) */
 	struct winbindd_methods *methods;
diff --git a/source3/nsswitch/winbindd_util.c b/source3/nsswitch/winbindd_util.c
index 6d1675752f..318da4a63a 100644
--- a/source3/nsswitch/winbindd_util.c
+++ b/source3/nsswitch/winbindd_util.c
@@ -52,8 +52,9 @@ struct winbindd_domain *domain_list(void)
 {
 	/* Initialise list */
 
-	if (!_domain_list)
-		init_domain_list();
+	if (!_domain_list) 
+		if (!init_domain_list()) 
+			return NULL;
 
 	return _domain_list;
 }
@@ -166,9 +167,7 @@ void rescan_trusted_domains( void )
 	if ( (now > last_scan) && ((now-last_scan) < WINBINDD_RESCAN_FREQ) )
 		return;
 		
-	/* get the handle for our domain */
-	
-	if ( (mydomain = find_domain_from_name(lp_workgroup())) == NULL ) {
+	if ( (mydomain = find_our_domain()) == NULL ) {
 		DEBUG(0,("rescan_trusted_domains: Can't find my own domain!\n"));
 		return;
 	}
@@ -266,10 +265,12 @@ BOOL init_domain_list(void)
 	/* Free existing list */
 	free_domain_list();
 
-	/* Add ourselves as the first entry */
+	/* Add ourselves as the first entry.  It *must* be the first entry */
 	
 	domain = add_trusted_domain( lp_workgroup(), lp_realm(), &cache_methods, NULL);
 	
+	domain->primary = True;
+
 	/* get any alternate name for the primary domain */
 	
 	cache_methods.alternate_name(domain);
@@ -291,8 +292,17 @@ BOOL init_domain_list(void)
 	return True;
 }
 
-/* Given a domain name, return the struct winbindd domain info for it 
-   if it is actually working. */
+/** 
+ * Given a domain name, return the struct winbindd domain info for it 
+ *
+ * @note Do *not* pass lp_workgroup() to this function.  domain_list
+ *       may modify it's value, and free that pointer.  Instead, our local
+ *       domain may be found by looking at the first entry in domain_list()
+ *       directly.
+ *
+ *
+ * @return The domain structure for the named domain, if it is working.
+ */
 
 struct winbindd_domain *find_domain_from_name(const char *domain_name)
 {
@@ -302,8 +312,9 @@ struct winbindd_domain *find_domain_from_name(const char *domain_name)
 
 	for (domain = domain_list(); domain != NULL; domain = domain->next) {
 		if (strequal(domain_name, domain->name) ||
-		    (domain->alt_name[0] && strequal(domain_name, domain->alt_name)))
+		    (domain->alt_name[0] && strequal(domain_name, domain->alt_name))) {
 			return domain;
+		}
 	}
 
 	/* Not found */
@@ -329,6 +340,24 @@ struct winbindd_domain *find_domain_from_sid(DOM_SID *sid)
 	return NULL;
 }
 
+/* Given a domain sid, return the struct winbindd domain info for it */
+
+struct winbindd_domain *find_our_domain()
+{
+	struct winbindd_domain *domain;
+
+	/* Search through list */
+
+	for (domain = domain_list(); domain != NULL; domain = domain->next) {
+		if (domain->primary)
+			return domain;
+	}
+
+	/* Not found */
+
+	return NULL;
+}
+
 /* Lookup a sid in a domain from a name */
 
 BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain, 
@@ -471,6 +500,20 @@ BOOL check_domain_env(char *domain_env, char *domain)
 	return False;
 }
 
+/* Is this a domain which we may assume no DOMAIN\ prefix? */
+
+static BOOL assume_domain(const char *domain) {
+	if ((lp_winbind_use_default_domain()  
+		  || lp_winbind_trusted_domains_only()) &&
+	    strequal(lp_workgroup(), domain)) 
+		return True;
+
+	if (strequal(get_global_sam_name(), domain)) 
+		return True;
+	
+	return False;
+}
+
 /* Parse a string of the form DOMAIN/user into a domain and a user */
 
 BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
@@ -480,10 +523,13 @@ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
 	if ( !p ) {
 		fstrcpy(user, domuser);
 		
-		if ( lp_winbind_use_default_domain() )
+		if ( assume_domain(lp_workgroup())) {
 			fstrcpy(domain, lp_workgroup());
-		else
-			fstrcpy( domain, "" );
+		} else if (assume_domain(get_global_sam_name())) {
+			fstrcpy( domain, get_global_sam_name() ); 
+		} else {
+			fstrcpy( domain, "");
+		}
 	} 
 	else {
 		fstrcpy(user, p+1);
@@ -501,13 +547,17 @@ BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
     'winbind separator' options.
     This means:
 	- omit DOMAIN when 'winbind use default domain = true' and DOMAIN is
-	lp_workgroup
+	lp_workgroup()
+
+    If we are a PDC or BDC, and this is for our domain, do likewise.
+
+    Also, if omit DOMAIN if 'winbind trusted domains only = true', as the 
+    username is then unqualified in unix
 	 
 */
 void fill_domain_username(fstring name, const char *domain, const char *user)
 {
-	if(lp_winbind_use_default_domain() &&
-	    !strcmp(lp_workgroup(), domain)) {
+	if (assume_domain(domain)) {
 		strlcpy(name, user, sizeof(fstring));
 	} else {
 		slprintf(name, sizeof(fstring) - 1, "%s%s%s",