[IOMultiplexer] Added asynchronous DNS Lookups

[IOMultiplexer.git] / src / IODNSHandler.h

diff --git a/src/IODNSHandler.h b/src/IODNSHandler.h
new file mode 100644 (file)
index 0000000..621afb7
--- /dev/null
+++ b/src/IODNSHandler.h
@@ -0,0 +1,70 @@
+/* IODNSHandler.h - IOMultiplexer
+ * Copyright (C) 2012  Philipp Kreil (pk910)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License 
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. 
+ */
+#ifndef _IODNSHandler_h
+#define _IODNSHandler_h
+
+
+#define IODNS_CALLBACK(NAME) void NAME(struct IODNSEvent *event)
+typedef IODNS_CALLBACK(iodns_callback);
+
+enum IODNSEventType {
+    IODNSEVENT_SUCCESS,
+    IODNSEVENT_FAILED
+};
+
+#define IODNS_RECORD_A    0x01
+#define IODNS_RECORD_AAAA 0x02
+#define IODNS_RECORD_PTR  0x04
+
+#define IODNS_FORWARD     0x03
+#define IODNS_REVERSE     0x04
+
+struct IODNSQuery {
+    void *query;
+    unsigned int type : 8;
+    char *hostname;
+    size_t addresslen;
+    union {
+        struct sockaddr *address;
+        struct IODNSResult *results
+    } addr;
+    iodns_callback *callback;
+    void *data;
+    
+    struct IODNSQuery *next, *prev;
+};
+
+struct IODNSResult {
+    unsigned int type : 8;
+    size_t addresslen;
+    struct sockaddr *address;
+    struct IODNSResult *next;
+};
+
+struct IODNSEvent {
+    enum IODNSEventType type;
+    struct IODNSQuery *query;
+};
+
+struct IODNSQuery *iodns_getaddrinfo(char *hostname, int records, iodns_callback *callback);
+struct IODNSQuery *iodns_getnameinfo(const struct sockaddr *addr, socklen_t addrlen, iodns_callback *callback);
+void iodns_abort(struct IODNSQuery *query);
+void iodns_poll();
+
+void iodns_free_result(struct IODNSResult *result);
+
+#endif