sync code with last improvements from OpenBSD

lib/libXdmcp/Write.c

@@ -0,0 +1,151 @@
+/*
+Copyright 1989, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ *
+ * Author:  Keith Packard, MIT X Consortium
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include <X11/X.h>
+#include <X11/Xmd.h>
+#include <X11/Xdmcp.h>
+#include <stdlib.h>
+
+int
+XdmcpWriteHeader (
+    XdmcpBufferPtr  buffer,
+    const XdmcpHeaderPtr  header)
+{
+    BYTE    *newData;
+
+    if ((int)buffer->size < 6 + (int)header->length)
+    {
+	newData = (BYTE *) malloc(XDM_MAX_MSGLEN * sizeof (BYTE));
+	if (!newData)
+	    return FALSE;
+	free((unsigned long *)(buffer->data));
+	buffer->data = newData;
+	buffer->size = XDM_MAX_MSGLEN;
+    }
+    buffer->pointer = 0;
+    if (!XdmcpWriteCARD16 (buffer, header->version))
+	return FALSE;
+    if (!XdmcpWriteCARD16 (buffer, header->opcode))
+	return FALSE;
+    if (!XdmcpWriteCARD16 (buffer, header->length))
+	return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteARRAY8 (XdmcpBufferPtr buffer, const ARRAY8Ptr array)
+{
+    int	i;
+
+    if (!XdmcpWriteCARD16 (buffer, array->length))
+	return FALSE;
+    for (i = 0; i < (int)array->length; i++)
+	if (!XdmcpWriteCARD8 (buffer, array->data[i]))
+	    return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteARRAY16 (XdmcpBufferPtr buffer, const ARRAY16Ptr array)
+{
+    int	i;
+
+    if (!XdmcpWriteCARD8 (buffer, array->length))
+	return FALSE;
+    for (i = 0; i < (int)array->length; i++)
+	if (!XdmcpWriteCARD16 (buffer, array->data[i]))
+	    return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteARRAY32 (XdmcpBufferPtr buffer, const ARRAY32Ptr array)
+{
+    int	i;
+
+    if (!XdmcpWriteCARD8 (buffer, array->length))
+	return FALSE;
+    for (i = 0; i < (int)array->length; i++)
+	if (!XdmcpWriteCARD32 (buffer, array->data[i]))
+	    return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteARRAYofARRAY8 (XdmcpBufferPtr buffer, ARRAYofARRAY8Ptr array)
+{
+    int	i;
+
+    if (!XdmcpWriteCARD8 (buffer, array->length))
+	return FALSE;
+    for (i = 0; i < (int)array->length; i++)
+	if (!XdmcpWriteARRAY8 (buffer, &array->data[i]))
+	    return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteCARD8 (
+    XdmcpBufferPtr  buffer,
+    unsigned	    value)
+{
+    if (buffer->pointer >= buffer->size)
+	return FALSE;
+    buffer->data[buffer->pointer++] = (BYTE) value;
+    return TRUE;
+}
+
+int
+XdmcpWriteCARD16 (
+    XdmcpBufferPtr  buffer,
+    unsigned	    value)
+{
+    if (!XdmcpWriteCARD8 (buffer, value >> 8))
+	return FALSE;
+    if (!XdmcpWriteCARD8 (buffer, value & 0xff))
+	return FALSE;
+    return TRUE;
+}
+
+int
+XdmcpWriteCARD32 (
+    XdmcpBufferPtr  buffer,
+    unsigned	    value)
+{
+    if (!XdmcpWriteCARD8 (buffer, value >> 24))
+	return FALSE;
+    if (!XdmcpWriteCARD8 (buffer, (value >> 16) & 0xff))
+	return FALSE;
+    if (!XdmcpWriteCARD8 (buffer, (value >> 8) & 0xff))
+	return FALSE;
+    if (!XdmcpWriteCARD8 (buffer, value & 0xff))
+	return FALSE;
+    return TRUE;
+}