Add generalized resolver routines.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@931 ec53bebd-3082-4978-b11e-865c3cabbd6b
1996-11-04 20:29:04 +00:00
parent b076677cdd
commit 810d6ff85c
2 changed files with 388 additions and 0 deletions
--- a/lib/roken/resolve.h
+++ b/lib/roken/resolve.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 1995, 1996 Kungliga Tekniska H<>gskolan (Royal Institute
+ * of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the Kungliga Tekniska
+ *      H<>gskolan and its contributors.
+ * 
+ * 4. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* $Id$ */
+
+/* THIS IS NOT (yet) A PUBLIC INTERFACE */
+
+
+#ifndef __RESOLVE_H__
+#define __RESOLVE_H__
+
+/* We use these, but they are not always present in <arpa/nameser.h> */
+
+#ifndef T_AFSDB
+#define T_AFSDB 18
+#endif
+#ifndef T_SRV
+#define T_SRV 33
+#endif
+
+struct dns_query{
+    char *domain;
+    int type;
+    int class;
+};
+
+struct mx_record{
+    int preference;
+    char domain[1];
+};
+
+struct srv_record{
+    int priority;
+    int weight;
+    int port;
+    char target[1];
+};
+
+struct resource_record{
+    char *domain;
+    int type;
+    int class;
+    int ttl;
+    int size;
+    union {
+	void *data;
+	struct mx_record *mx;
+	struct mx_record *afsdb; /* mx and afsdb are identical */
+	struct srv_record *srv;
+	struct in_addr *a;
+	char *txt;
+    }u;
+    struct resource_record *next;
+};
+
+
+#ifndef HAVE_ARPA_NAMESER_H /* XXX */
+typedef int HEADER; /* will never be used */
+#endif
+
+struct dns_reply{
+    HEADER h;
+    struct dns_query q;
+    struct resource_record *head;
+};
+
+
+struct dns_reply* dns_lookup(char *, char *);
+
+void dns_free_data(struct dns_reply *r);
+
+#endif /* __RESOLVE_H__ */