Import ISC DHCP 3.0.1 RC6 client.

1 files changed, 92 insertions, 0 deletions

diff --git a/contrib/isc-dhcp/includes/omapip/buffer.h b/contrib/isc-dhcp/includes/omapip/buffer.h
new file mode 100644
index 0000000..1670555
--- /dev/null
+++ b/contrib/isc-dhcp/includes/omapip/buffer.h
@@ -0,0 +1,92 @@
+/* buffer.h
+
+   Definitions for the object management API protocol buffering... */
+
+/*
+ * Copyright (c) 1996-1999 Internet Software Consortium.
+ * 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. Neither the name of The Internet Software Consortium 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 INTERNET SOFTWARE CONSORTIUM 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 INTERNET SOFTWARE CONSORTIUM 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.
+ *
+ * This software has been written for the Internet Software Consortium
+ * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
+ * To learn more about the Internet Software Consortium, see
+ * ``http://www.isc.org/''.  To learn more about Vixie Enterprises,
+ * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
+ * ``http://www.nominum.com''.
+ */
+
+/* OMAPI buffers are ring buffers, which means that the beginning of the
+   buffer and the end of the buffer chase each other around.   As long as
+   the tail never catches up to the head, there's room in the buffer for
+   data.
+
+	- If the tail and the head are equal, the buffer is empty.
+
+	- If the tail is less than the head, the contents of the buffer
+	  are the bytes from the head to the end of buffer, and in addition,
+	  the bytes between the beginning of the buffer and the tail, not
+	  including the byte addressed by the tail.
+
+	- If the tail is greater than the head, then the buffer contains
+	  valid bytes starting with the byte addressed by the head, and
+	  ending with the byte before the byte addressed by the tail.
+
+   There will always be at least one byte of waste, because the tail can't
+   increase so that it's equal to the head (that would represent an empty
+   buffer. */
+#define OMAPI_BUF_SIZE 4048
+typedef struct _omapi_buffer {
+	struct _omapi_buffer *next;	/* Buffers can be chained. */
+	u_int32_t refcnt;		/* Buffers are reference counted. */
+	u_int16_t head, tail;		/* Buffers are organized in a ring. */
+	char buf [OMAPI_BUF_SIZE];	/* The actual buffer is included in
+					   the buffer data structure. */
+} omapi_buffer_t;	
+
+#define BUFFER_BYTES_FREE(x)	\
+	((x) -> tail > (x) -> head \
+	  ? sizeof ((x) -> buf) - ((x) -> tail - (x) -> head) \
+	  : (x) -> head - (x) -> tail)
+
+#define BYTES_IN_BUFFER(x)	\
+	((x) -> tail > (x) -> head \
+	 ? (x) -> tail - (x) -> head - 1 \
+	 : sizeof ((x) -> buf) - ((x) -> head - (x) -> tail) - 1)
+
+isc_result_t omapi_connection_require (omapi_object_t *, unsigned);
+isc_result_t omapi_connection_copyout (unsigned char *,
+				       omapi_object_t *, unsigned);
+isc_result_t omapi_connection_copyin (omapi_object_t *,
+				      const unsigned char *, unsigned);
+isc_result_t omapi_connection_flush (omapi_object_t *);
+isc_result_t omapi_connection_get_uint32 (omapi_object_t *, u_int32_t *);
+isc_result_t omapi_connection_put_uint32 (omapi_object_t *, u_int32_t);
+isc_result_t omapi_connection_get_uint16 (omapi_object_t *, u_int16_t *);
+isc_result_t omapi_connection_put_uint16 (omapi_object_t *, u_int32_t);
+