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
|
/* readrec.c: The __opiereadrec() library function.
%%% copyright-cmetz-96
This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
The Inner Net License Version 2 applies to this software.
You should have received a copy of the license with this software. If
you didn't get a copy, you may request one from <license@inner.net>.
History:
Modified by cmetz for OPIE 2.31. Removed active attack protection
support. Fixed a debug message typo. Keep going after bogus
records. Set read flag.
Created by cmetz for OPIE 2.3.
*/
#include "opie_cfg.h"
#include <stdio.h>
#include <sys/types.h>
#include <errno.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */
#include <ctype.h>
#include <errno.h>
#if DEBUG
#include <syslog.h>
#endif /* DEBUG */
#include "opie.h"
static int parserec FUNCTION((opie), struct opie *opie)
{
char *c, *c2;
if (!(c2 = strchr(opie->opie_principal = opie->opie_buf, ' ')))
return -1;
while(*c2 == ' ') c2++;
*(c2 - 1) = 0;
if (!(c2 = strchr(c = c2, ' ')))
return -1;
*(c2++) = 0;
{
char *c3;
opie->opie_n = strtoul(c, &c3, 10);
if (*c3)
return -1;
};
if (!(c2 = strchr(opie->opie_seed = c2, ' ')))
return -1;
*(c2++) = 0;
while(*c2 == ' ') c2++;
if (!(c2 = strchr(opie->opie_val = c2, ' ')))
return -1;
*(c2++) = 0;
return 0;
}
int __opiereadrec FUNCTION((opie), struct opie *opie)
{
FILE *f = NULL;
int rval = -1;
if (!(f = __opieopen(KEY_FILE, 0, 0644))) {
#if DEBUG
syslog(LOG_DEBUG, "__opiereadrec: __opieopen(KEY_FILE..) failed!");
#endif /* DEBUG */
goto ret;
}
{
int i;
if ((i = open(KEY_FILE, O_RDWR)) < 0) {
opie->opie_flags &= ~__OPIE_FLAGS_RW;
#if DEBUG
syslog(LOG_DEBUG, "__opiereadrec: open(KEY_FILE, O_RDWR) failed: %s", strerror(errno));
#endif /* DEBUG */
} else {
close(i);
opie->opie_flags |= __OPIE_FLAGS_RW;
}
}
if (opie->opie_buf[0]) {
if (fseek(f, opie->opie_recstart, SEEK_SET))
goto ret;
if (fgets(opie->opie_buf, sizeof(opie->opie_buf), f))
goto ret;
if (parserec(opie))
goto ret;
opie->opie_flags |= __OPIE_FLAGS_READ;
rval = 0;
goto ret;
}
if (!opie->opie_principal)
goto ret;
{
char *c, principal[OPIE_PRINCIPAL_MAX];
int i;
if (c = strchr(opie->opie_principal, ':'))
*c = 0;
if (strlen(opie->opie_principal) > OPIE_PRINCIPAL_MAX)
(opie->opie_principal)[OPIE_PRINCIPAL_MAX] = 0;
strcpy(principal, opie->opie_principal);
do {
if ((opie->opie_recstart = ftell(f)) < 0)
goto ret;
if (!fgets(opie->opie_buf, sizeof(opie->opie_buf), f)) {
rval = 1;
goto ret;
}
if (parserec(opie))
continue;
} while (strcmp(principal, opie->opie_principal));
rval = 0;
}
ret:
if (f)
fclose(f);
return rval;
}
|
