* add proper error codes and patch everything to make use of it

* parameter validity checkin in all user visible functions of libavahi-core
* two new python tools/examples avahi-resolve-host-name and avahi-resolve-address


git-svn-id: file:///home/lennart/svn/public/avahi/trunk@238 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe

1 files changed, 15 insertions, 2 deletions

diff --git a/avahi-core/browse-domain.c b/avahi-core/browse-domain.c
index c6331b4..de3cb1b 100644
--- a/avahi-core/browse-domain.c
+++ b/avahi-core/browse-domain.c
@@ -60,6 +60,12 @@ AvahiDomainBrowser *avahi_domain_browser_new(AvahiServer *server, AvahiIfIndex i
     
     g_assert(server);
     g_assert(callback);
+    g_assert(type >= AVAHI_DOMAIN_BROWSER_BROWSE && type <= AVAHI_DOMAIN_BROWSER_BROWSE_LEGACY);
+
+    if (domain && !avahi_valid_domain_name(domain)) {
+        avahi_server_set_errno(server, AVAHI_ERR_INVALID_DOMAIN_NAME);
+        return NULL;
+    }
 
     b = g_new(AvahiDomainBrowser, 1);
     b->server = server;
@@ -67,6 +73,8 @@ AvahiDomainBrowser *avahi_domain_browser_new(AvahiServer *server, AvahiIfIndex i
     b->callback = callback;
     b->userdata = userdata;
 
+    AVAHI_LLIST_PREPEND(AvahiDomainBrowser, browser, server->domain_browsers, b);
+
     switch (type) {
         case AVAHI_DOMAIN_BROWSER_BROWSE:
             n = g_strdup_printf("b._dns-sd._udp.%s", b->domain_name);
@@ -97,7 +105,10 @@ AvahiDomainBrowser *avahi_domain_browser_new(AvahiServer *server, AvahiIfIndex i
     b->record_browser = avahi_record_browser_new(server, interface, protocol, k, record_browser_callback, b);
     avahi_key_unref(k);
 
-    AVAHI_LLIST_PREPEND(AvahiDomainBrowser, browser, server->domain_browsers, b);
+    if (!b->record_browser) {
+        avahi_domain_browser_free(b);
+        return NULL;
+    }
     
     return b;
 }
@@ -107,7 +118,9 @@ void avahi_domain_browser_free(AvahiDomainBrowser *b) {
 
     AVAHI_LLIST_REMOVE(AvahiDomainBrowser, browser, b->server->domain_browsers, b);
 
-    avahi_record_browser_free(b->record_browser);
+    if (b->record_browser)
+        avahi_record_browser_free(b->record_browser);
+    
     g_free(b->domain_name);
     g_free(b);
 }