1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
/* Copyright 1996, The XFree86 Project, Inc */
/* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Beta.c,v 3.8 2001/07/25 15:05:05 dawes Exp $ */
/*
* This is for publicly released beta server binaries.
*
* The current version is written to $HOME/.xf86ServerName
* If $HOME isn't set (as may be the case when starting xdm at boot time)
* try '/'.
*
* Defining EXPIRE_SERVER enables the server expiry date. If EXPIRY_TIME
* is 0, this is disabled.
*
* Defining SHOW_BETA_MESSAGE enables displaying the beta message when first
* running a new beta version (the current version is checked against the
* contents of $HOME/.xf86ServerName)
*
* If EXPIRE_SERVER is defined, the message will be displayed both with
* WARNING_DAYS days of expiry and after expiry regardless of
* SHOW_BETA_MESSAGE.
*
* MESSAGE_SLEEP sets the sleep time (in seconds) after displaying the
* message.
*/
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86Version.h"
#ifndef EXPIRY_TIME
#define EXPIRY_TIME 0
#endif
#ifndef SHOW_BETA_MESSAGE
#if (XF86_VERSION_BETA > 0) && (XF86_VERSION_ALPHA == 0)
#define SHOW_BETA_MESSAGE
#endif
#endif
#ifndef EXPIRE_SERVER
#if (XF86_VERSION_BETA > 0) && (XF86_VERSION_ALPHA == 0)
#define EXPIRE_SERVER
#endif
#endif
#ifndef MESSAGE_SLEEP
#define MESSAGE_SLEEP 10
#endif
#ifndef WARNING_DAYS
#define WARNING_DAYS 7
#endif
#define DAY_IN_SECONDS (24 * 60 * 60)
#define XOR_VALUE_1 0x39479da4L
#define XOR_VALUE_2 0x7df6324bL
#define KEY_LENGTH 16
void
xf86CheckBeta(int extraDays, char *key)
{
FILE *m = NULL;
Bool showmessage = FALSE;
Bool expired = FALSE;
Bool expiresoon = FALSE;
Bool requireconfirm = FALSE;
int expiryextended = 0;
#ifdef SHOW_BETA_MESSAGE
FILE *f = NULL;
char *home = NULL;
char *filename = NULL;
Bool writefile = FALSE;
char oldvers[16] = {0, };
#endif
time_t expirytime = EXPIRY_TIME;
/*
* Check if the beta message should be displayed. It is displayed when
* the version doesn't match that in $HOME/.XFree86, and when within
* one week of the expiry date.
*/
#ifdef SHOW_BETA_MESSAGE
if (!(home = getenv("HOME")))
home = "/";
{
char homebuf[PATH_MAX];
/* getenv might return R/O memory, as with OS/2 */
strncpy(homebuf,home,PATH_MAX-1);
homebuf[PATH_MAX-1] = '\0';
home = homebuf;
if (!(filename =
(char *)ALLOCATE_LOCAL(strlen(home) +
strlen(xf86ServerName) + 3)))
showmessage = TRUE;
else {
if (home[0] == '/' && home[1] == '\0')
home[0] = '\0';
sprintf(filename, "%s/.%s", home, xf86ServerName);
writefile = TRUE;
if (!(f = fopen(filename, "r+")))
showmessage = TRUE;
else {
fgets(oldvers, 16, f);
if (strncmp(oldvers, XF86_VERSION, 15)) {
showmessage = TRUE;
}
fclose(f);
}
}
}
#endif
#ifdef EXPIRE_SERVER
if (expirytime != 0) {
if (extraDays > 0 && key != NULL && strlen(key) == KEY_LENGTH) {
time_t newExpiry;
unsigned long key1, key2;
char tmp[9];
strncpy(tmp, key, 8);
tmp[8] = '\0';
key1 = strtoul(tmp, NULL, 16);
key2 = strtoul(key + 8, NULL, 16);
newExpiry = expirytime + extraDays * DAY_IN_SECONDS;
if ((newExpiry ^ key1) == XOR_VALUE_1 &&
(newExpiry ^ key2) == XOR_VALUE_2) {
expirytime = newExpiry;
expiryextended = extraDays;
}
}
if (time(NULL) > expirytime) {
showmessage = TRUE;
expired = TRUE;
} else if (expirytime - time(NULL) < WARNING_DAYS * (DAY_IN_SECONDS)) {
showmessage = TRUE;
expiresoon = TRUE;
}
}
#endif
if (showmessage) {
#if 0
/*
* This doesn't work very well. stdin is usually closed, and even if
* the server doesn't close it, xinit prevents this from being useful.
*/
/* Check if stderr is a tty */
if (isatty(fileno(stderr))) {
requireconfirm = TRUE;
}
#endif
#if 0
/* This doesn't work when the server is started by xinit */
#ifndef __EMX__
/* See if /dev/tty can be opened */
m = fopen("/dev/tty", "r+");
#endif
#endif
if (m)
requireconfirm = TRUE;
else
m = stderr;
if (m) {
putc('\007', m);
fprintf(m, "\n");
fprintf(m, " This is a beta version of XFree86.\n\n");
fprintf(m, " This binary may be redistributed providing it is not"
" modified in any way.\n\n");
fprintf(m, " Please send success and problem reports to"
" <report@XFree86.org>.\n\n");
if (expired) {
fprintf(m, " This version (%s) has expired.\n", XF86_VERSION);
fprintf(m, " Please get the release version or a newer beta"
" version.\n");
} else if (expiresoon) {
fprintf(m, " WARNING! This version (%s) will expire in less than"
" %ld day(s)\n at %s\n", XF86_VERSION,
(long)(expirytime - time(NULL)) / DAY_IN_SECONDS + 1,
ctime(&expirytime));
fprintf(m, " Please get the release version or a newer beta"
" version.\n");
} else if (expirytime != 0) {
fprintf(m, " This version (%s) will expire at %s\n", XF86_VERSION,
ctime(&expirytime));
}
if (!expired && expiryextended) {
fprintf(m, " Note: the expiry date has been extended by %d days\n",
expiryextended);
}
if (!expired) {
if (requireconfirm) {
char c[2];
fflush(m);
fprintf(m, "\nHit <Enter> to continue: ");
fflush(m);
fgets(c, 2, m);
} else {
fflush(m);
fprintf(m, "\nWaiting for %d seconds...", MESSAGE_SLEEP);
fflush(m);
sleep(MESSAGE_SLEEP);
fprintf(m, "\n");
}
}
fprintf(m, "\n");
if (m != stderr)
fclose(m);
}
}
#ifdef SHOW_BETA_MESSAGE
#define WRITE_BETA_FILE { \
unlink(filename); \
if (f = fopen(filename, "w")) { \
fprintf(f, XF86_VERSION); \
fclose(f); \
} \
}
if (writefile) {
#if !defined(__EMX__)
#if defined(SYSV) || defined(linux)
/* Need to fork to change to ruid without loosing euid */
if (getuid() != 0) {
switch (fork()) {
case -1:
FatalError("xf86CheckBeta(): fork failed (%s)\n", strerror(errno));
break;
case 0: /* child */
setuid(getuid());
WRITE_BETA_FILE
exit(0);
break;
default: /* parent */
wait(NULL);
}
} else {
WRITE_BETA_FILE
}
#else /* ! (SYSV || linux) */
{
int realuid = getuid();
#if !defined(SVR4) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__GNU__)
setruid(0);
#endif
seteuid(realuid);
WRITE_BETA_FILE
seteuid(0);
#if !defined(SVR4) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__GNU__)
setruid(realuid);
#endif
}
#endif /* SYSV || linux */
#else /* __EMX__ */
WRITE_BETA_FILE
#endif /* __EMX__ */
}
if (filename) {
DEALLOCATE_LOCAL(filename);
filename = NULL;
}
#endif
if (expired)
exit(1);
}
|
