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
|
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2009-2020 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#else
# include "compat/stdbool.h"
#endif /* HAVE_STDBOOL_H */
#include <string.h>
#include <signal.h>
#include <limits.h>
#include <time.h>
#include "sudo_compat.h"
#include "sudo_debug.h"
#include "sudo_eventlog.h"
#include "sudo_fatal.h"
#include "sudo_gettext.h"
#include "sudo_iolog.h"
#include "sudo_util.h"
bool
iolog_parse_loginfo_legacy(FILE *fp, const char *iolog_dir,
struct eventlog *evlog)
{
char *buf = NULL, *cp, *ep;
const char *errstr;
size_t bufsize = 0, cwdsize = 0, cmdsize = 0;
bool ret = false;
debug_decl(iolog_parse_loginfo_legacy, SUDO_DEBUG_UTIL);
/*
* Info file has three lines:
* 1) a log info line
* 2) cwd
* 3) command with args
*/
if (getdelim(&buf, &bufsize, '\n', fp) == -1 ||
getdelim(&evlog->cwd, &cwdsize, '\n', fp) == -1 ||
getdelim(&evlog->command, &cmdsize, '\n', fp) == -1) {
sudo_warn(U_("%s: invalid log file"), iolog_dir);
goto done;
}
/* Strip the newline from the cwd and command. */
evlog->cwd[strcspn(evlog->cwd, "\n")] = '\0';
evlog->command[strcspn(evlog->command, "\n")] = '\0';
/*
* Crack the log line (lines and cols not present in old versions).
* timestamp:user:runas_user:runas_group:tty:lines:cols
* XXX - probably better to use strtok and switch on the state.
*/
buf[strcspn(buf, "\n")] = '\0';
cp = buf;
/* timestamp */
if ((ep = strchr(cp, ':')) == NULL) {
sudo_warn(U_("%s: time stamp field is missing"), iolog_dir);
goto done;
}
*ep = '\0';
evlog->submit_time.tv_sec = sudo_strtonum(cp, 0, TIME_T_MAX, &errstr);
if (errstr != NULL) {
sudo_warn(U_("%s: time stamp %s: %s"), iolog_dir, cp, errstr);
goto done;
}
/* submit user */
cp = ep + 1;
if ((ep = strchr(cp, ':')) == NULL) {
sudo_warn(U_("%s: user field is missing"), iolog_dir);
goto done;
}
if ((evlog->submituser = strndup(cp, (size_t)(ep - cp))) == NULL) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
goto done;
}
/* runas user */
cp = ep + 1;
if ((ep = strchr(cp, ':')) == NULL) {
sudo_warn(U_("%s: runas user field is missing"), iolog_dir);
goto done;
}
if ((evlog->runuser = strndup(cp, (size_t)(ep - cp))) == NULL) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
goto done;
}
/* runas group */
cp = ep + 1;
if ((ep = strchr(cp, ':')) == NULL) {
sudo_warn(U_("%s: runas group field is missing"), iolog_dir);
goto done;
}
if (cp != ep) {
if ((evlog->rungroup = strndup(cp, (size_t)(ep - cp))) == NULL) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
goto done;
}
}
/* tty, followed by optional lines + cols */
cp = ep + 1;
if ((ep = strchr(cp, ':')) == NULL) {
/* just the tty */
if ((evlog->ttyname = strdup(cp)) == NULL) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
goto done;
}
} else {
/* tty followed by lines + cols */
if ((evlog->ttyname = strndup(cp, (size_t)(ep - cp))) == NULL) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
goto done;
}
cp = ep + 1;
/* need to NULL out separator to use sudo_strtonum() */
/* XXX - use sudo_strtonumx */
if ((ep = strchr(cp, ':')) != NULL) {
*ep = '\0';
}
evlog->lines = sudo_strtonum(cp, 1, INT_MAX, &errstr);
if (errstr != NULL) {
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"%s: tty lines %s: %s", iolog_dir, cp, errstr);
}
if (ep != NULL) {
cp = ep + 1;
evlog->columns = sudo_strtonum(cp, 1, INT_MAX, &errstr);
if (errstr != NULL) {
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"%s: tty cols %s: %s", iolog_dir, cp, errstr);
}
}
}
ret = true;
done:
free(buf);
debug_return_bool(ret);
}
|
