Fill.c revision 44dda7b2 
1/*
2Copyright 1989, 1998  The Open Group
3
4Permission to use, copy, modify, distribute, and sell this software and its
5documentation for any purpose is hereby granted without fee, provided that
6the above copyright notice appear in all copies and that both that
7copyright notice and this permission notice appear in supporting
8documentation.
9
10The above copyright notice and this permission notice shall be included in
11all copies or substantial portions of the Software.
12
13THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
16OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
17AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
18CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
19
20Except as contained in this notice, the name of The Open Group shall not be
21used in advertising or otherwise to promote the sale, use or other dealings
22in this Software without prior written authorization from The Open Group.
23 * *
24 * Author:  Keith Packard, MIT X Consortium
25 */
26
27#ifdef WIN32
28#define _WILLWINSOCK_
29#endif
30#ifdef HAVE_CONFIG_H
31#include <config.h>
32#endif
33#include <X11/Xos.h>
34#include <X11/X.h>
35#include <X11/Xmd.h>
36#include <X11/Xdmcp.h>
37#include <stdlib.h>
38
39#ifdef STREAMSCONN
40#include <tiuser.h>
41#else
42#ifdef WIN32
43#include <X11/Xwinsock.h>
44#else
45#include <sys/socket.h>
46#endif
47#endif
48
49int
50XdmcpFill (int fd, XdmcpBufferPtr buffer, XdmcpNetaddr from, int *fromlen)
51{
52    BYTE    *newBuf;
53#ifdef STREAMSCONN
54    struct t_unitdata dataunit;
55    int gotallflag, result;
56#endif
57
58    if (buffer->size < XDM_MAX_MSGLEN)
59    {
60	newBuf = (BYTE *) malloc(XDM_MAX_MSGLEN);
61	if (newBuf)
62	{
63	    free(buffer->data);
64	    buffer->data = newBuf;
65	    buffer->size = XDM_MAX_MSGLEN;
66	}
67    }
68    buffer->pointer = 0;
69#ifdef STREAMSCONN
70    dataunit.addr.buf = from;
71    dataunit.addr.maxlen = *fromlen;
72    dataunit.opt.maxlen = 0;	/* don't care to know about options */
73    dataunit.udata.buf = (char *)buffer->data;
74    dataunit.udata.maxlen = buffer->size;
75    result = t_rcvudata (fd, &dataunit, &gotallflag);
76    if (result < 0) {
77	return FALSE;
78    }
79    buffer->count = dataunit.udata.len;
80    *fromlen = dataunit.addr.len;
81#else
82    buffer->count = recvfrom (fd, (char*)buffer->data, buffer->size, 0,
83			      (struct sockaddr *)from, (void *)fromlen);
84#endif
85    if (buffer->count < 6) {
86	buffer->count = 0;
87	return FALSE;
88    }
89    return TRUE;
90}
91