add new function avahi_domain_ends_with()

git-svn-id: file:///home/lennart/svn/public/avahi/trunk@605 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe

2 files changed, 21 insertions, 0 deletions

diff --git a/avahi-common/domain.c b/avahi-common/domain.c
index 3703a04..1a4f8a6 100644
--- a/avahi-common/domain.c
+++ b/avahi-common/domain.c
@@ -337,3 +337,21 @@ unsigned avahi_domain_hash(const char *s) {
             hash = 31 * hash + tolower(*p);
     }
 }
+
+int avahi_domain_ends_with(const char *domain, const char *suffix) {
+    assert(domain);
+    assert(suffix);
+
+    assert(avahi_is_valid_domain_name(domain));
+    assert(avahi_is_valid_domain_name(suffix));
+
+    for (;;) {
+        char dummy[64];
+        
+        if (avahi_domain_equal(domain, suffix))
+            return 1;
+
+        if (!(avahi_unescape_label(&domain, dummy, sizeof(dummy))))
+            return 0;
+    } 
+}
diff --git a/avahi-common/domain.h b/avahi-common/domain.h
index 88cf4d3..0464915 100644
--- a/avahi-common/domain.h
+++ b/avahi-common/domain.h
@@ -70,6 +70,9 @@ int avahi_is_valid_host_name(const char *t);
 /** Return some kind of hash value for the domain, useful for using domains as hash table keys. */
 unsigned avahi_domain_hash(const char *name);
 
+/** Returns 1 if the the end labels of domain are eqal to suffix */
+int avahi_domain_ends_with(const char *domain, const char *suffix);
+
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 AVAHI_C_DECL_END
 #endif