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
|
/* Copyright (c) 1998, 2000, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@suse.de>, 1998.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <ctype.h>
#include <malloc.h>
#include <pwd.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <string.h>
#include <libintl.h>
#include <sys/param.h>
#include <sys/types.h>
#include "dbg_log.h"
#include "nscd.h"
/* Wrapper functions with error checking for standard functions. */
extern char *xstrdup (const char *s);
/* Names of the databases. */
const char *dbnames[lastdb] =
{
[pwddb] = "passwd",
[grpdb] = "group",
[hstdb] = "hosts"
};
int
nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])
{
FILE *fp;
char *line, *cp, *entry, *arg1, *arg2;
size_t len;
int cnt;
/* Open the configuration file. */
fp = fopen (fname, "r");
if (fp == NULL)
return -1;
/* The stream is not used by more than one thread. */
(void) __fsetlocking (fp, FSETLOCKING_BYCALLER);
line = NULL;
len = 0;
do
{
ssize_t n = getline (&line, &len, fp);
if (n < 0)
break;
if (line[n - 1] == '\n')
line[n - 1] = '\0';
/* Because the file format does not know any form of quoting we
can search forward for the next '#' character and if found
make it terminating the line. */
*strchrnul (line, '#') = '\0';
/* If the line is blank it is ignored. */
if (line[0] == '\0')
continue;
entry = line;
while (isspace (*entry) && *entry != '\0')
++entry;
cp = entry;
while (!isspace (*cp) && *cp != '\0')
++cp;
arg1 = cp;
++arg1;
*cp = '\0';
if (strlen (entry) == 0)
dbg_log (_("Parse error: %s"), line);
while (isspace (*arg1) && *arg1 != '\0')
++arg1;
cp = arg1;
while (!isspace (*cp) && *cp != '\0')
++cp;
arg2 = cp;
++arg2;
*cp = '\0';
if (strlen (arg2) > 0)
{
while (isspace (*arg2) && *arg2 != '\0')
++arg2;
cp = arg2;
while (!isspace (*cp) && *cp != '\0')
++cp;
*cp = '\0';
}
if (strcmp (entry, "positive-time-to-live") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
dbs[cnt].postimeout = atol (arg2);
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "negative-time-to-live") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
dbs[cnt].negtimeout = atol (arg2);
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "suggested-size") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
dbs[cnt].suggested_module = atol (arg2);
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "enable-cache") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
if (strcmp (arg2, "no") == 0)
dbs[cnt].enabled = 0;
else if (strcmp (arg2, "yes") == 0)
dbs[cnt].enabled = 1;
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "check-files") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
if (strcmp (arg2, "no") == 0)
dbs[cnt].check_file = 0;
else if (strcmp (arg2, "yes") == 0)
dbs[cnt].check_file = 1;
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "logfile") == 0)
set_logfile (arg1);
else if (strcmp (entry, "debug-level") == 0)
{
int level = atoi (arg1);
if (level > 0)
debug_level = level;
}
else if (strcmp (entry, "threads") == 0)
{
if (nthreads == -1)
nthreads = MAX (atol (arg1), lastdb);
}
else if (strcmp (entry, "server-user") == 0)
{
if (!arg1)
dbg_log (_("Must specify user name for server-user option"));
else
server_user = xstrdup (arg1);
}
else if (strcmp (entry, "stat-user") == 0)
{
if (!arg1)
dbg_log (_("Must specify user name for stat-user option"));
else
{
stat_user = xstrdup (arg1);
struct passwd *pw = getpwnam (stat_user);
if (pw != NULL)
stat_uid = pw->pw_uid;
}
}
else if (strcmp (entry, "persistent") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
if (strcmp (arg2, "no") == 0)
dbs[cnt].persistent = 0;
else if (strcmp (arg2, "yes") == 0)
dbs[cnt].persistent = 1;
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "shared") == 0)
{
for (cnt = 0; cnt < lastdb; ++cnt)
if (strcmp (arg1, dbnames[cnt]) == 0)
{
if (strcmp (arg2, "no") == 0)
dbs[cnt].shared = 0;
else if (strcmp (arg2, "yes") == 0)
#ifndef atomic_supports_shared
#define atomic_supports_shared 1
#endif
dbs[cnt].shared = atomic_supports_shared;
break;
}
if (cnt == lastdb)
dbg_log ("database %s is not supported\n", arg1);
}
else if (strcmp (entry, "reload-count") == 0)
{
if (strcasecmp (arg1, "unlimited") == 0)
reload_count = UINT_MAX;
else
{
unsigned int count = strtoul (arg1, NULL, 0);
if (count > UINT8_MAX - 1)
reload_count = UINT_MAX;
else if (count >= 0)
reload_count = count;
else
dbg_log (_("invalid value for 'reload-count': %u"), count);
}
}
else
dbg_log (_("Unknown option: %s %s %s"), entry, arg1, arg2);
}
while (!feof_unlocked (fp));
/* Free the buffer. */
free (line);
/* Close configuration file. */
fclose (fp);
return 0;
}
|
