2 * Copyright 1989 Network Computing Devices, Inc., Mountain View, California.
4 * Permission to use, copy, modify, and distribute this software and its
5 * documentation for any purpose and without fee is hereby granted, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of N.C.D. not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. N.C.D. makes no representations about the
11 * suitability of this software for any purpose. It is provided "as is"
12 * without express or implied warranty.
21 #include <X11/Xfuncproto.h>
25 #define XDM_PROTOCOL_VERSION 1
26 #define XDM_UDP_PORT 177
28 /* IANA has assigned FF0X:0:0:0:0:0:0:12B as the permanently assigned
29 * multicast addresses for XDMCP, where X in the prefix may be replaced
30 * by any valid scope identifier, such as 1 for Node-Local, 2 for Link-Local,
31 * 5 for Site-Local, and so on. We set the default here to the Link-Local
32 * version to most closely match the old IPv4 subnet broadcast behavior.
33 * Both xdm and X -query allow specifying a different address if a different
36 #define XDM_DEFAULT_MCAST_ADDR6 "ff02:0:0:0:0:0:0:12b"
38 #define XDM_MAX_MSGLEN 8192
40 #define XDM_MAX_RTX 32
41 #define XDM_RTX_LIMIT 7
42 #define XDM_KA_RTX_LIMIT 4
43 #define XDM_DEF_DORMANCY (3 * 60) /* 3 minutes */
44 #define XDM_MAX_DORMANCY (24 * 60 * 60) /* 24 hours */
47 BROADCAST_QUERY = 1, QUERY, INDIRECT_QUERY, FORWARD_QUERY,
48 WILLING, UNWILLING, REQUEST, ACCEPT, DECLINE, MANAGE, REFUSE,
49 FAILED, KEEPALIVE, ALIVE
53 XDM_QUERY, XDM_BROADCAST, XDM_INDIRECT, XDM_COLLECT_QUERY,
54 XDM_COLLECT_BROADCAST_QUERY, XDM_COLLECT_INDIRECT_QUERY,
55 XDM_START_CONNECTION, XDM_AWAIT_REQUEST_RESPONSE,
56 XDM_AWAIT_MANAGE_RESPONSE, XDM_MANAGE, XDM_RUN_SESSION, XDM_OFF,
57 XDM_AWAIT_USER_INPUT, XDM_KEEPALIVE, XDM_AWAIT_ALIVE_RESPONSE,
58 #if defined(IPv6) && defined(AF_INET6)
59 XDM_MULTICAST, XDM_COLLECT_MULTICAST_QUERY,
67 #define XDM_MAX_STR_LEN 21
68 #define XDM_MAX_HOSTS 20
69 struct xdm_host_table {
70 struct sockaddr_in sockaddr;
71 char name[XDM_MAX_STR_LEN];
72 char status[XDM_MAX_STR_LEN];
76 typedef CARD8 *CARD8Ptr;
77 typedef CARD16 *CARD16Ptr;
78 typedef CARD32 *CARD32Ptr;
80 typedef struct _ARRAY8 {
85 typedef struct _ARRAY16 {
88 } ARRAY16, *ARRAY16Ptr;
90 typedef struct _ARRAY32 {
93 } ARRAY32, *ARRAY32Ptr;
95 typedef struct _ARRAYofARRAY8 {
98 } ARRAYofARRAY8, *ARRAYofARRAY8Ptr;
100 typedef struct _XdmcpHeader {
101 CARD16 version, opcode, length;
102 } XdmcpHeader, *XdmcpHeaderPtr;
104 typedef struct _XdmcpBuffer {
106 int size; /* size of buffer pointed by to data */
107 int pointer; /* current index into data */
108 int count; /* bytes read from network into data */
109 } XdmcpBuffer, *XdmcpBufferPtr;
111 typedef struct _XdmAuthKey {
113 } XdmAuthKeyRec, *XdmAuthKeyPtr;
116 /* implementation-independent network address structure.
117 Equiv to sockaddr* for sockets and netbuf* for STREAMS. */
119 typedef char *XdmcpNetaddr;
121 extern int XdmcpWriteARRAY16(XdmcpBufferPtr buffer, const ARRAY16Ptr array);
122 extern int XdmcpWriteARRAY32(XdmcpBufferPtr buffer, const ARRAY32Ptr array);
123 extern int XdmcpWriteARRAY8(XdmcpBufferPtr buffer, const ARRAY8Ptr array);
124 extern int XdmcpWriteARRAYofARRAY8(XdmcpBufferPtr buffer, const ARRAYofARRAY8Ptr array);
125 extern int XdmcpWriteCARD16(XdmcpBufferPtr buffer, unsigned value);
126 extern int XdmcpWriteCARD32(XdmcpBufferPtr buffer, unsigned value);
127 extern int XdmcpWriteCARD8(XdmcpBufferPtr buffer, unsigned value);
128 extern int XdmcpWriteHeader(XdmcpBufferPtr buffer, const XdmcpHeaderPtr header);
130 extern int XdmcpFlush(int fd, XdmcpBufferPtr buffer, XdmcpNetaddr to, int tolen);
132 extern int XdmcpReadARRAY16(XdmcpBufferPtr buffer, ARRAY16Ptr array);
133 extern int XdmcpReadARRAY32(XdmcpBufferPtr buffer, ARRAY32Ptr array);
134 extern int XdmcpReadARRAY8(XdmcpBufferPtr buffer, ARRAY8Ptr array);
135 extern int XdmcpReadARRAYofARRAY8(XdmcpBufferPtr buffer, ARRAYofARRAY8Ptr array);
136 extern int XdmcpReadCARD16(XdmcpBufferPtr buffer, CARD16Ptr valuep);
137 extern int XdmcpReadCARD32(XdmcpBufferPtr buffer, CARD32Ptr valuep);
138 extern int XdmcpReadCARD8(XdmcpBufferPtr buffer, CARD8Ptr valuep);
139 extern int XdmcpReadHeader(XdmcpBufferPtr buffer, XdmcpHeaderPtr header);
141 extern int XdmcpFill(int fd, XdmcpBufferPtr buffer, XdmcpNetaddr from, int *fromlen);
143 extern int XdmcpReadRemaining(const XdmcpBufferPtr buffer);
145 extern void XdmcpDisposeARRAY8(ARRAY8Ptr array);
146 extern void XdmcpDisposeARRAY16(ARRAY16Ptr array);
147 extern void XdmcpDisposeARRAY32(ARRAY32Ptr array);
148 extern void XdmcpDisposeARRAYofARRAY8(ARRAYofARRAY8Ptr array);
150 extern int XdmcpCopyARRAY8(const ARRAY8Ptr src, ARRAY8Ptr dst);
152 extern int XdmcpARRAY8Equal(const ARRAY8Ptr array1, const ARRAY8Ptr array2);
154 extern void XdmcpGenerateKey (XdmAuthKeyPtr key);
155 extern void XdmcpIncrementKey (XdmAuthKeyPtr key);
156 extern void XdmcpDecrementKey (XdmAuthKeyPtr key);
158 extern void XdmcpWrap(unsigned char *input, unsigned char *wrapper, unsigned char *output, int bytes);
159 extern void XdmcpUnwrap(unsigned char *input, unsigned char *wrapper, unsigned char *output, int bytes);
167 extern int XdmcpCompareKeys (const XdmAuthKeyPtr a, const XdmAuthKeyPtr b);
169 extern int XdmcpAllocARRAY16 (ARRAY16Ptr array, int length);
170 extern int XdmcpAllocARRAY32 (ARRAY32Ptr array, int length);
171 extern int XdmcpAllocARRAY8 (ARRAY8Ptr array, int length);
172 extern int XdmcpAllocARRAYofARRAY8 (ARRAYofARRAY8Ptr array, int length);
174 extern int XdmcpReallocARRAY16 (ARRAY16Ptr array, int length);
175 extern int XdmcpReallocARRAY32 (ARRAY32Ptr array, int length);
176 extern int XdmcpReallocARRAY8 (ARRAY8Ptr array, int length);
177 extern int XdmcpReallocARRAYofARRAY8 (ARRAYofARRAY8Ptr array, int length);
181 #endif /* _XDMCP_H_ */