1 /*
2 * $XConsortium: Fill.c /main/11 1996/11/13 14:44:18 lehors $
3 * $XFree86: xc/lib/Xdmcp/Fill.c,v 3.4 1997/01/18 06:52:06 dawes Exp $
4 *
5 *
6 Copyright (c) 1989 X Consortium
7
8 Permission is hereby granted, free of charge, to any person obtaining a copy
9 of this software and associated documentation files (the "Software"), to deal
10 in the Software without restriction, including without limitation the rights
11 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 copies of the Software, and to permit persons to whom the Software is
13 furnished to do so, subject to the following conditions:
14
15 The above copyright notice and this permission notice shall be included in
16 all copies or substantial portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24
25 Except as contained in this notice, the name of the X Consortium shall not be
26 used in advertising or otherwise to promote the sale, use or other dealings
27 in this Software without prior written authorization from the X Consortium.
28 * *
29 * Author: Keith Packard, MIT X Consortium
30 */
31
32 #ifdef WIN32
33 #define _WILLWINSOCK_
34 #endif
35 #include <X11/Xos.h>
36 #include <X11/X.h>
37 #include <X11/Xmd.h>
38 #include <X11/Xdmcp.h>
39
40 #ifdef STREAMSCONN
41 #include <tiuser.h>
42 #else
43 #ifdef WIN32
44 #include <X11/Xwinsock.h>
45 #else
46 #ifndef MINIX
47 #ifndef Lynx
48 #include <sys/socket.h>
49 #else
50 #include <socket.h>
51 #endif /* !Lynx */
52 #endif /* !MINIX */
53 #endif
54 #endif
55
56 #ifndef MINIX
57 int
XdmcpFill(fd,buffer,from,fromlen)58 XdmcpFill (fd, buffer, from, fromlen)
59 int fd;
60 XdmcpBufferPtr buffer;
61 XdmcpNetaddr from; /* return */
62 int *fromlen; /* return */
63 {
64 BYTE *newBuf;
65 #ifdef STREAMSCONN
66 struct t_unitdata dataunit;
67 int gotallflag, result;
68 #endif
69
70 if (buffer->size < XDM_MAX_MSGLEN)
71 {
72 newBuf = (BYTE *) Xalloc (XDM_MAX_MSGLEN);
73 if (newBuf)
74 {
75 Xfree (buffer->data);
76 buffer->data = newBuf;
77 buffer->size = XDM_MAX_MSGLEN;
78 }
79 }
80 buffer->pointer = 0;
81 #ifdef STREAMSCONN
82 dataunit.addr.buf = from;
83 dataunit.addr.maxlen = *fromlen;
84 dataunit.opt.maxlen = 0; /* don't care to know about options */
85 dataunit.udata.buf = (char *)buffer->data;
86 dataunit.udata.maxlen = buffer->size;
87 result = t_rcvudata (fd, &dataunit, &gotallflag);
88 if (result < 0) {
89 return FALSE;
90 }
91 buffer->count = dataunit.udata.len;
92 *fromlen = dataunit.addr.len;
93 #else
94 buffer->count = recvfrom (fd, (char*)buffer->data, buffer->size, 0,
95 (struct sockaddr *)from, fromlen);
96 #endif
97 if (buffer->count < 6) {
98 buffer->count = 0;
99 return FALSE;
100 }
101 return TRUE;
102 }
103 #else /* MINIX */
104 int
MNX_XdmcpFill(fd,buffer,from,fromlen,data,datalen)105 MNX_XdmcpFill (fd, buffer, from, fromlen, data, datalen)
106 int fd;
107 XdmcpBufferPtr buffer;
108 XdmcpNetaddr from; /* return */
109 int *fromlen; /* return */
110 char *data;
111 int datalen;
112 {
113 BYTE *newBuf;
114 struct sockaddr_in *from_addr;
115 udp_io_hdr_t *udp_io_hdr;
116
117 if (buffer->size < XDM_MAX_MSGLEN)
118 {
119 newBuf = (BYTE *) Xalloc (XDM_MAX_MSGLEN);
120 if (newBuf)
121 {
122 Xfree (buffer->data);
123 buffer->data = newBuf;
124 buffer->size = XDM_MAX_MSGLEN;
125 }
126 }
127 buffer->pointer = 0;
128 udp_io_hdr= (udp_io_hdr_t *)data;
129 data += sizeof(udp_io_hdr_t) + udp_io_hdr->uih_ip_opt_len;
130 datalen -= sizeof(udp_io_hdr_t) + udp_io_hdr->uih_ip_opt_len;
131 buffer->count= udp_io_hdr->uih_data_len;
132 if (buffer->count > datalen)
133 {
134 buffer->count= 0;
135 return FALSE;
136 }
137 bcopy(data, (char *)buffer->data, buffer->count);
138 from_addr= (struct sockaddr_in *)from;
139 from_addr->sin_family= AF_INET;
140 from_addr->sin_addr.s_addr= udp_io_hdr->uih_src_addr;
141 from_addr->sin_port= udp_io_hdr->uih_src_port;
142 if (buffer->count < 6) {
143 buffer->count = 0;
144 return FALSE;
145 }
146 return TRUE;
147 }
148 #endif /* !MINIX */
149