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
|
/*
* SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
* SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
* SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
* SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <config.h>
#ifdef RLOGIN
#ident "$Id$"
#include "prototypes.h"
#include "defines.h"
#include <stdio.h>
#include <pwd.h>
#include <netdb.h>
static struct {
int spd_name;
int spd_baud;
} speed_table[] =
{
#ifdef B50
{
B50, 50},
#endif
#ifdef B75
{
B75, 75},
#endif
#ifdef B110
{
B110, 110},
#endif
#ifdef B134
{
B134, 134},
#endif
#ifdef B150
{
B150, 150},
#endif
#ifdef B200
{
B200, 200},
#endif
#ifdef B300
{
B300, 300},
#endif
#ifdef B600
{
B600, 600},
#endif
#ifdef B1200
{
B1200, 1200},
#endif
#ifdef B1800
{
B1800, 1800},
#endif
#ifdef B2400
{
B2400, 2400},
#endif
#ifdef B4800
{
B4800, 4800},
#endif
#ifdef B9600
{
B9600, 9600},
#endif
#ifdef B19200
{
B19200, 19200},
#endif
#ifdef B38400
{
B38400, 38400},
#endif
{
-1, -1}
};
static void get_remote_string (char *buf, size_t size)
{
for (;;) {
if (read (0, buf, 1) != 1) {
exit (EXIT_FAILURE);
}
if ('\0' == *buf) {
return;
}
--size;
if (size > 0) {
++buf;
}
}
/*NOTREACHED*/}
int
do_rlogin (const char *remote_host, char *name, size_t namelen, char *term,
size_t termlen)
{
struct passwd *pwd;
char remote_name[32];
char *cp;
unsigned long remote_speed = 9600;
int speed_name = B9600;
int i;
TERMIO termio;
get_remote_string (remote_name, sizeof remote_name);
get_remote_string (name, namelen);
get_remote_string (term, termlen);
cp = strchr (term, '/');
if (NULL != cp) {
*cp = '\0';
cp++;
if (getulong (cp, &remote_speed) == 0) {
remote_speed = 9600;
}
}
for (i = 0;
( (speed_table[i].spd_baud != remote_speed)
&& (speed_table[i].spd_name != -1));
i++);
if (-1 != speed_table[i].spd_name) {
speed_name = speed_table[i].spd_name;
}
/*
* Put the terminal in cooked mode with echo turned on.
*/
GTTY (0, &termio);
termio.c_iflag |= ICRNL | IXON;
termio.c_oflag |= OPOST | ONLCR;
termio.c_lflag |= ICANON | ECHO | ECHOE;
#ifdef CBAUD
termio.c_cflag = (termio.c_cflag & ~CBAUD) | speed_name;
#else
termio.c_cflag = (termio.c_cflag) | speed_name;
#endif
STTY (0, &termio);
pwd = getpwnam (name); /* local, no need for xgetpwnam */
if (NULL == pwd) {
return 0;
}
/*
* ruserok() returns 0 for success on modern systems, and 1 on
* older ones. If you are having trouble with people logging
* in without giving a required password, THIS is the culprit -
* go fix the #define in config.h.
*/
#ifndef RUSEROK
return 0;
#else
return ruserok (remote_host, pwd->pw_uid == 0,
remote_name, name) == RUSEROK;
#endif
}
#endif /* RLOGIN */
|
