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authorLennart Poettering <lennart@poettering.net>2005-09-10 02:20:51 +0000
committerLennart Poettering <lennart@poettering.net>2005-09-10 02:20:51 +0000
commit30f94fc47685900079f23c936668bf904beae05f (patch)
treea4822de1c4774ab827f716e97871955731c23901
parent02e302dc116e359471aee1d9fb4f99fc0d442f24 (diff)
add new public function avahi_server_is_service_local()
git-svn-id: file:///home/lennart/svn/public/avahi/trunk@561 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
-rw-r--r--avahi-core/core.h3
-rw-r--r--avahi-core/server.c66
2 files changed, 69 insertions, 0 deletions
diff --git a/avahi-core/core.h b/avahi-core/core.h
index 427a09a..abc30c0 100644
--- a/avahi-core/core.h
+++ b/avahi-core/core.h
@@ -568,6 +568,9 @@ int avahi_server_errno(AvahiServer *s);
/** Return the local service cookie */
uint32_t avahi_server_get_local_service_cookie(AvahiServer *s);
+/** Return 1 if there is a local service with the specified credentials registeresd. Return 0 if not, negative on failure */
+int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex, AvahiProtocol protocol, const char *name, const char *type, const char*domain);
+
#ifndef DOXYGEN_SHOULD_SKIP_THIS
AVAHI_C_DECL_END
#endif
diff --git a/avahi-core/server.c b/avahi-core/server.c
index 625af50..11deb24 100644
--- a/avahi-core/server.c
+++ b/avahi-core/server.c
@@ -2464,3 +2464,69 @@ uint32_t avahi_server_get_local_service_cookie(AvahiServer *s) {
return s->local_service_cookie;
}
+
+int avahi_server_is_service_local(AvahiServer *s, AvahiIfIndex interface, AvahiProtocol protocol, const char *name, const char *type, const char*domain) {
+ AvahiKey *key = NULL;
+ char *d, *t;
+ char ename[64], n[256];
+ int ret;
+ AvahiEntry *e;
+
+ assert(s);
+ assert(name);
+ assert(type);
+ assert(domain);
+
+ if (!avahi_is_valid_service_name(name))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_NAME);
+
+ if (!avahi_is_valid_service_type(type))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_SERVICE_TYPE);
+
+ if (domain && !avahi_is_valid_domain_name(domain))
+ return avahi_server_set_errno(s, AVAHI_ERR_INVALID_DOMAIN_NAME);
+
+ escape_service_name(ename, sizeof(ename), name);
+
+ if (!(d = avahi_normalize_name(domain)) ||
+ !(t = avahi_normalize_name(type))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+ snprintf(n, sizeof(n), "%s.%s.%s", ename, t, d);
+
+ if (!(key = avahi_key_new(n, AVAHI_DNS_CLASS_IN, AVAHI_DNS_TYPE_SRV))) {
+ ret = avahi_server_set_errno(s, AVAHI_ERR_NO_MEMORY);
+ goto fail;
+ }
+
+ ret = 0;
+
+ for (e = avahi_hashmap_lookup(s->entries_by_key, key); e; e = e->by_key_next) {
+
+ if ((e->interface == interface || e->interface <= 0 || interface <= 0) &&
+ (e->protocol == protocol || e->protocol == AVAHI_PROTO_UNSPEC || protocol == AVAHI_PROTO_UNSPEC)) {
+ ret = 1;
+ break;
+ }
+ }
+
+ avahi_key_unref(key);
+
+ avahi_free(d);
+ avahi_free(t);
+
+ return ret;
+
+fail:
+ if (d)
+ avahi_free(d);
+
+ if (t)
+ avahi_free(t);
+
+ if (key)
+ avahi_key_unref(key);
+
+ return ret;
+}