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
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#ifndef NONETGRAPH
#include <netgraph.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h> /* setproctitle() under OpenBSD (+NetBSD ?)*/
#include <string.h>
#include <sysexits.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/linker.h>
#endif
#include <unistd.h>
#ifdef __OpenBSD__
#include <util.h>
#else
#include <libutil.h>
#endif
#include <utmp.h>
#include "log.h"
#include "main.h"
#include "id.h"
static int uid;
static int euid;
void
ID0init()
{
uid = getuid();
euid = geteuid();
}
static void
ID0setuser(void)
{
if (seteuid(uid) == -1) {
log_Printf(LogERROR, "ID0setuser: Unable to seteuid!\n");
AbortProgram(EX_NOPERM);
}
}
uid_t
ID0realuid()
{
return uid;
}
static void
ID0set0(void)
{
if (seteuid(euid) == -1) {
log_Printf(LogERROR, "ID0set0: Unable to seteuid!\n");
AbortProgram(EX_NOPERM);
}
}
int
ID0ioctl(int fd, unsigned long req, void *arg)
{
int ret;
ID0set0();
ret = ioctl(fd, req, arg);
log_Printf(LogID0, "%d = ioctl(%d, %lu, %p)\n", ret, fd, req, arg);
ID0setuser();
return ret;
}
int
ID0unlink(const char *name)
{
int ret;
ID0set0();
ret = unlink(name);
log_Printf(LogID0, "%d = unlink(\"%s\")\n", ret, name);
ID0setuser();
return ret;
}
int
ID0socket(int domain, int type, int protocol)
{
int ret;
ID0set0();
ret = socket(domain, type, protocol);
log_Printf(LogID0, "%d = socket(%d, %d, %d)\n", ret, domain, type, protocol);
ID0setuser();
return ret;
}
FILE *
ID0fopen(const char *path, const char *mode)
{
FILE *ret;
ID0set0();
ret = fopen(path, mode);
log_Printf(LogID0, "%p = fopen(\"%s\", \"%s\")\n", ret, path, mode);
ID0setuser();
return ret;
}
int
ID0open(const char *path, int flags, ...)
{
int ret;
va_list ap;
va_start(ap, flags);
ID0set0();
ret = open(path, flags, va_arg(ap, int));
log_Printf(LogID0, "%d = open(\"%s\", %d)\n", ret, path, flags);
ID0setuser();
va_end(ap);
return ret;
}
int
ID0write(int fd, const void *data, size_t len)
{
int ret;
ID0set0();
ret = write(fd, data, len);
log_Printf(LogID0, "%d = write(%d, data, %ld)\n", ret, fd, (long)len);
ID0setuser();
return ret;
}
int
ID0uu_lock(const char *basettyname)
{
int ret;
ID0set0();
ret = uu_lock(basettyname);
log_Printf(LogID0, "%d = uu_lock(\"%s\")\n", ret, basettyname);
ID0setuser();
return ret;
}
int
ID0uu_lock_txfr(const char *basettyname, pid_t newpid)
{
int ret;
ID0set0();
ret = uu_lock_txfr(basettyname, newpid);
log_Printf(LogID0, "%d = uu_lock_txfr(\"%s\", %d)\n", ret, basettyname,
(int)newpid);
ID0setuser();
return ret;
}
int
ID0uu_unlock(const char *basettyname)
{
int ret;
ID0set0();
ret = uu_unlock(basettyname);
log_Printf(LogID0, "%d = uu_unlock(\"%s\")\n", ret, basettyname);
ID0setuser();
return ret;
}
void
ID0login(struct utmp *ut)
{
ID0set0();
if (logout(ut->ut_line)) {
log_Printf(LogID0, "logout(\"%s\")\n", ut->ut_line);
logwtmp(ut->ut_line, "", "");
log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut->ut_line);
}
login(ut);
log_Printf(LogID0, "login(\"%s\", \"%.*s\")\n",
ut->ut_line, (int)(sizeof ut->ut_name), ut->ut_name);
ID0setuser();
}
void
ID0logout(const char *device, int nologout)
{
struct utmp ut;
strncpy(ut.ut_line, device, sizeof ut.ut_line - 1);
ut.ut_line[sizeof ut.ut_line - 1] = '\0';
ID0set0();
if (nologout || logout(ut.ut_line)) {
log_Printf(LogID0, "logout(\"%s\")\n", ut.ut_line);
logwtmp(ut.ut_line, "", "");
log_Printf(LogID0, "logwtmp(\"%s\", \"\", \"\")\n", ut.ut_line);
} else
log_Printf(LogERROR, "ID0logout: No longer logged in on %s\n", ut.ut_line);
ID0setuser();
}
int
ID0bind_un(int s, const struct sockaddr_un *name)
{
int result;
ID0set0();
result = bind(s, (const struct sockaddr *)name, sizeof *name);
log_Printf(LogID0, "%d = bind(%d, \"%s\", %d)\n",
result, s, name->sun_path, (int)sizeof(*name));
ID0setuser();
return result;
}
int
ID0connect_un(int s, const struct sockaddr_un *name)
{
int result;
ID0set0();
result = connect(s, (const struct sockaddr *)name, sizeof *name);
log_Printf(LogID0, "%d = connect(%d, \"%s\", %d)\n",
result, s, name->sun_path, (int)sizeof(*name));
ID0setuser();
return result;
}
int
ID0kill(pid_t pid, int sig)
{
int result;
ID0set0();
result = kill(pid, sig);
log_Printf(LogID0, "%d = kill(%d, %d)\n", result, (int)pid, sig);
ID0setuser();
return result;
}
void
ID0setproctitle(const char *title)
{
ID0set0();
if (title == NULL) {
setproctitle(NULL);
log_Printf(LogID0, "setproctitle(NULL)\n");
} else {
setproctitle("%s", title);
log_Printf(LogID0, "setproctitle(\"%%s\", \"%s\")\n", title);
}
ID0setuser();
}
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
int
ID0kldload(const char *dev)
{
int result;
ID0set0();
result = kldload(dev);
log_Printf(LogID0, "%d = kldload(\"%s\")\n", result, dev);
ID0setuser();
return result;
}
#endif
#ifndef NONETGRAPH
int
ID0NgMkSockNode(const char *name, int *cs, int *ds)
{
int result;
ID0set0();
result = NgMkSockNode(name, cs, ds);
log_Printf(LogID0, "%d = NgMkSockNode(\"%s\", &cs, &ds)\n",
result, name ? name : "");
ID0setuser();
return result;
}
#endif
|