Flatten bind9 vendor work area

1 files changed, 129 insertions, 0 deletions

diff --git a/lib/lwres/lwpacket.c b/lib/lwres/lwpacket.c
new file mode 100644
index 0000000..964b465
--- /dev/null
+++ b/lib/lwres/lwpacket.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: lwpacket.c,v 1.14.18.2 2005/04/29 00:17:19 marka Exp $ */
+
+/*! \file */
+
+/**
+ *    These functions rely on a struct lwres_lwpacket which is defined in
+ *    \link lwpacket.h lwres/lwpacket.h.\endlink
+ * 
+ *    The following opcodes are currently defined:   
+ * 
+ * \li   #LWRES_OPCODE_NOOP
+ *           Success is always returned and the packet contents are
+ *           echoed. The \link lwres_noop.c lwres_noop_*()\endlink functions should be used for this
+ *           type.
+ * 
+ * \li   #LWRES_OPCODE_GETADDRSBYNAME
+ *           returns all known addresses for a given name. The
+ *           \link lwres_gabn.c lwres_gabn_*()\endlink functions should be used for this type.
+ * 
+ * \li   #LWRES_OPCODE_GETNAMEBYADDR
+ *           return the hostname for the given address. The
+ *           \link lwres_gnba.c lwres_gnba_*() \endlink functions should be used for this type.     
+ * 
+ *    lwres_lwpacket_renderheader() transfers the contents of lightweight
+ *    resolver packet structure #lwres_lwpacket_t *pkt in network byte
+ *    order to the lightweight resolver buffer, *b.
+ * 
+ *    lwres_lwpacket_parseheader() performs the converse operation. It
+ *    transfers data in network byte order from buffer *b to resolver
+ *    packet *pkt. The contents of the buffer b should correspond to a   
+ *    #lwres_lwpacket_t.
+ * 
+ * \section lwpacket_return Return Values
+ * 
+ *    Successful calls to lwres_lwpacket_renderheader() and
+ *    lwres_lwpacket_parseheader() return #LWRES_R_SUCCESS. If there is
+ *    insufficient space to copy data between the buffer *b and
+ *    lightweight resolver packet *pkt both functions return
+ *    #LWRES_R_UNEXPECTEDEND.
+ */
+
+#include <config.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <lwres/lwbuffer.h>
+#include <lwres/lwpacket.h>
+#include <lwres/result.h>
+
+#include "assert_p.h"
+
+/*% Length of Packet */
+#define LWPACKET_LENGTH \
+	(sizeof(lwres_uint16_t) * 4 + sizeof(lwres_uint32_t) * 5)
+
+/*% transfers the contents of lightweight resolver packet structure lwres_lwpacket_t *pkt in network byte order to the lightweight resolver buffer, *b. */
+
+lwres_result_t
+lwres_lwpacket_renderheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
+	REQUIRE(b != NULL);
+	REQUIRE(pkt != NULL);
+
+	if (!SPACE_OK(b, LWPACKET_LENGTH))
+		return (LWRES_R_UNEXPECTEDEND);
+
+	lwres_buffer_putuint32(b, pkt->length);
+	lwres_buffer_putuint16(b, pkt->version);
+	lwres_buffer_putuint16(b, pkt->pktflags);
+	lwres_buffer_putuint32(b, pkt->serial);
+	lwres_buffer_putuint32(b, pkt->opcode);
+	lwres_buffer_putuint32(b, pkt->result);
+	lwres_buffer_putuint32(b, pkt->recvlength);
+	lwres_buffer_putuint16(b, pkt->authtype);
+	lwres_buffer_putuint16(b, pkt->authlength);
+
+	return (LWRES_R_SUCCESS);
+}
+
+/*% transfers data in network byte order from buffer *b to resolver packet *pkt. The contents of the buffer b should correspond to a lwres_lwpacket_t. */
+
+lwres_result_t
+lwres_lwpacket_parseheader(lwres_buffer_t *b, lwres_lwpacket_t *pkt) {
+	lwres_uint32_t space;
+
+	REQUIRE(b != NULL);
+	REQUIRE(pkt != NULL);
+
+	space = LWRES_BUFFER_REMAINING(b);
+	if (space < LWPACKET_LENGTH)
+		return (LWRES_R_UNEXPECTEDEND);
+
+	pkt->length = lwres_buffer_getuint32(b);
+	/*
+	 * XXXBEW/MLG Checking that the buffer is long enough probably
+	 * shouldn't be done here, since this function is supposed to just
+	 * parse the header.
+	 */
+	if (pkt->length > space)
+		return (LWRES_R_UNEXPECTEDEND);
+	pkt->version = lwres_buffer_getuint16(b);
+	pkt->pktflags = lwres_buffer_getuint16(b);
+	pkt->serial = lwres_buffer_getuint32(b);
+	pkt->opcode = lwres_buffer_getuint32(b);
+	pkt->result = lwres_buffer_getuint32(b);
+	pkt->recvlength = lwres_buffer_getuint32(b);
+	pkt->authtype = lwres_buffer_getuint16(b);
+	pkt->authlength = lwres_buffer_getuint16(b);
+
+	return (LWRES_R_SUCCESS);
+}