2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these libraries and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $TOG: xdmauth.c /main/4 1997/03/14 13:45:35 barstow $ */
24 /* (c) Copyright 1997 The Open Group */
26 * (c) Copyright 1993, 1994 Hewlett-Packard Company *
27 * (c) Copyright 1993, 1994 International Business Machines Corp. *
28 * (c) Copyright 1993, 1994 Sun Microsystems, Inc. *
29 * (c) Copyright 1993, 1994 Novell, Inc. *
38 * Revision 1.1.2.3 1995/06/06 20:25:50 Chris_Beute
39 * Code snapshot merge from March 15 and SIA changes
40 * [1995/05/31 20:17:31 Chris_Beute]
42 * Revision 1.1.2.2 1995/04/21 13:05:43 Peter_Derr
43 * dtlogin auth key fixes from deltacde
44 * [1995/04/12 19:21:36 Peter_Derr]
46 * xdm R6 version used to handle XDM-AUTHORIZATION-1
47 * [1995/04/12 18:06:02 Peter_Derr]
53 Copyright (c) 1988 X Consortium
55 Permission is hereby granted, free of charge, to any person obtaining
56 a copy of this software and associated documentation files (the
57 "Software"), to deal in the Software without restriction, including
58 without limitation the rights to use, copy, modify, merge, publish,
59 distribute, sublicense, and/or sell copies of the Software, and to
60 permit persons to whom the Software is furnished to do so, subject to
61 the following conditions:
63 The above copyright notice and this permission notice shall be included
64 in all copies or substantial portions of the Software.
66 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
67 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
68 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
69 IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
70 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
71 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
72 OTHER DEALINGS IN THE SOFTWARE.
74 Except as contained in this notice, the name of the X Consortium shall
75 not be used in advertising or otherwise to promote the sale, use or
76 other dealings in this Software without prior written authorization
77 from the X Consortium.
82 * xdm - display manager daemon
83 * Author: Keith Packard, MIT X Consortium
87 * generate authorization data for XDM-AUTHORIZATION-1 as per XDMCP spec
94 static char auth_name[256];
95 static int auth_name_len;
98 XdmPrintDataHex(const char *s, const char *a, int l)
103 for (i = 0; i < l; i++)
104 Debug (" %02x", a[i] & 0xff);
108 #ifdef notdef /* not used */
113 XdmPrintDataHex (s, (char *) k->data, 8);
119 XdmPrintArray8Hex(const char *s, ARRAY8Ptr a)
121 XdmPrintDataHex (s, (char *) a->data, a->length);
126 XdmInitAuth (name_len, name)
127 #if NeedWidePrototypes
128 unsigned int name_len;
130 unsigned short name_len;
131 #endif /* NeedWidePrototypes */
136 auth_name_len = name_len;
137 memmove( auth_name, name, name_len);
141 * Generate authorization for XDM-AUTHORIZATION-1
143 * When being used with XDMCP, 8 bytes are generated for the session key
144 * (sigma), as the random number (rho) is already shared between xdm and
145 * the server. Otherwise, we'll prepend a random number to pass in the file
146 * between xdm and the server (16 bytes total)
150 XdmGetAuthHelper (namelen, name, includeRho)
151 unsigned short namelen;
156 new = (Xauth *) malloc (sizeof (Xauth));
160 new->family = FamilyWild;
161 new->address_length = 0;
163 new->number_length = 0;
166 new->data_length = 16;
168 new->data_length = 8;
170 new->data = (char *) malloc (new->data_length);
176 new->name = (char *) malloc (namelen);
179 free ((char *) new->data);
183 memmove( (char *)new->name, name, namelen);
184 new->name_length = namelen;
185 GenerateAuthData ((char *)new->data, new->data_length);
187 * set the first byte of the session key to zero as it
188 * is a DES key and only uses 56 bits
190 ((char *)new->data)[new->data_length - 8] = '\0';
191 XdmPrintDataHex ("Local server auth", (char *)new->data, new->data_length);
196 XdmGetAuth (namelen, name)
197 #if NeedWidePrototypes
198 unsigned int namelen;
200 unsigned short namelen;
201 #endif /* NeedWidePrototypes */
204 return XdmGetAuthHelper (namelen, name, TRUE);
209 void XdmGetXdmcpAuth (pdpy,authorizationNameLen, authorizationName)
210 struct protoDisplay *pdpy;
211 #if NeedWidePrototypes
212 unsigned int authorizationNameLen;
214 unsigned short authorizationNameLen;
215 #endif /* NeedWidePrototypes */
216 char *authorizationName;
218 Xauth *fileauth, *xdmcpauth;
220 if (pdpy->fileAuthorization && pdpy->xdmcpAuthorization)
222 xdmcpauth = XdmGetAuthHelper (authorizationNameLen, authorizationName, FALSE);
225 fileauth = (Xauth *) malloc (sizeof (Xauth));
228 XauDisposeAuth(xdmcpauth);
231 /* build the file auth from the XDMCP auth */
232 *fileauth = *xdmcpauth;
233 fileauth->name = malloc (xdmcpauth->name_length);
234 fileauth->data = malloc (16);
235 fileauth->data_length = 16;
236 if (!fileauth->name || !fileauth->data)
238 XauDisposeAuth (xdmcpauth);
240 free ((char *) fileauth->name);
242 free ((char *) fileauth->data);
243 free ((char *) fileauth);
247 * for the file authorization, prepend the random number (rho)
248 * which is simply the number we've been passing back and
251 memmove( fileauth->name, xdmcpauth->name, xdmcpauth->name_length);
252 memmove( fileauth->data, pdpy->authenticationData.data, 8);
253 memmove( fileauth->data + 8, xdmcpauth->data, 8);
254 XdmPrintDataHex ("Accept packet auth", xdmcpauth->data, xdmcpauth->data_length);
255 XdmPrintDataHex ("Auth file auth", fileauth->data, fileauth->data_length);
256 /* encrypt the session key for its trip back to the server */
257 XdmcpWrap (xdmcpauth->data, &pdpy->key, xdmcpauth->data, 8);
258 pdpy->fileAuthorization = fileauth;
259 pdpy->xdmcpAuthorization = xdmcpauth;
262 #define atox(c) ('0' <= c && c <= '9' ? c - '0' : \
263 'a' <= c && c <= 'f' ? c - 'a' + 10 : \
264 'A' <= c && c <= 'F' ? c - 'A' + 10 : -1)
275 while (in[0] && in[1])
280 bottom = atox(in[1]);
283 *out++ = (top << 4) | bottom;
293 * Search the Keys file for the entry matching this display. This
294 * routine accepts either plain ascii strings for keys, or hex-encoded numbers
297 XdmGetKey (pdpy, displayID)
298 struct protoDisplay *pdpy;
302 char line[1024], id[1024], key[1024];
305 Debug ("Lookup key for %*.*s\n", displayID->length, displayID->length, displayID->data);
306 keys = fopen (keyFile, "r");
309 while (fgets (line, sizeof (line) - 1, keys))
311 if (line[0] == '#' || sscanf (line, "%s %s", id, key) != 2)
313 bzero(line, sizeof(line));
314 Debug ("Key entry \"%s\" \"%s\"\n", id, key);
315 if (strlen (id) == displayID->length &&
316 !strncmp (id, (char *)displayID->data, displayID->length))
318 if (!strncmp (key, "0x", 2) || !strncmp (key, "0X", 2))
319 if (!HexToBinary (key))
321 keylen = strlen (key);
323 key[keylen++] = '\0';
324 pdpy->key.data[0] = '\0';
325 memmove( pdpy->key.data + 1, key, 7);
326 bzero(key, sizeof(key));
331 bzero(line, sizeof(line));
332 bzero(key, sizeof(key));
338 XdmCheckAuthentication (pdpy, displayID, authenticationName, authenticationData)
339 struct protoDisplay *pdpy;
340 ARRAY8Ptr displayID, authenticationName, authenticationData;
342 XdmAuthKeyPtr incoming;
344 if (!XdmGetKey (pdpy, displayID))
346 if (authenticationData->length != 8)
348 XdmcpUnwrap (authenticationData->data, &pdpy->key,
349 authenticationData->data, 8);
350 XdmPrintArray8Hex ("Request packet auth", authenticationData);
351 if (!XdmcpCopyARRAY8(authenticationData, &pdpy->authenticationData))
353 incoming = (XdmAuthKeyPtr) authenticationData->data;
354 XdmcpIncrementKey (incoming);
355 XdmcpWrap (authenticationData->data, &pdpy->key,
356 authenticationData->data, 8);
361 #endif /* HASXDMAUTH (covering the entire file) */