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
|
/* Portions of this file are subject to the following copyright(s). See
* the Net-SNMP's COPYING file for more details and other copyrights
* that may apply:
*/
/*
* Portions of this file are copyrighted by:
* Copyright (C) 2007 Apple, Inc. All rights reserved.
* Use is subject to license terms specified in the COPYING file
* distributed with the Net-SNMP package.
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-features.h>
#include <net-snmp/net-snmp-includes.h>
#include <stdio.h>
#include <ctype.h>
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
#include <sys/types.h>
#if HAVE_LIMITS_H
#include <limits.h>
#endif
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#include <errno.h>
#if HAVE_DMALLOC_H
# include <dmalloc.h>
#endif
#include <net-snmp/types.h>
#include <net-snmp/library/container.h>
#include <net-snmp/library/file_utils.h>
#include <net-snmp/library/dir_utils.h>
netsnmp_feature_child_of(container_directory, container_types)
#ifdef NETSNMP_FEATURE_REQUIRE_CONTAINER_DIRECTORY
netsnmp_feature_require(file_utils)
netsnmp_feature_require(container_free_all)
#endif /* NETSNMP_FEATURE_REQUIRE_CONTAINER_DIRECTORY */
#ifndef NETSNMP_FEATURE_REMOVE_CONTAINER_DIRECTORY
static int
_insert_nsfile( netsnmp_container *c, const char *name, struct stat *stats,
u_int flags);
/*
* read file names in a directory, with an optional filter
*/
netsnmp_container *
netsnmp_directory_container_read_some(netsnmp_container *user_container,
const char *dirname,
netsnmp_directory_filter *filter,
void *filter_ctx, u_int flags)
{
DIR *dir;
netsnmp_container *container = user_container;
struct dirent *file;
char path[SNMP_MAXPATH];
size_t dirname_len;
int rc;
struct stat statbuf;
netsnmp_file ns_file_tmp;
if ((flags & NETSNMP_DIR_RELATIVE_PATH) && (flags & NETSNMP_DIR_RECURSE)) {
DEBUGMSGTL(("directory:container",
"no support for relative path with recursion\n"));
return NULL;
}
DEBUGMSGTL(("directory:container", "reading %s\n", dirname));
/*
* create the container, if needed
*/
if (NULL == container) {
if (flags & NETSNMP_DIR_NSFILE) {
container = netsnmp_container_find("nsfile_directory_container:"
"binary_array");
if (container) {
container->compare = (netsnmp_container_compare*)
netsnmp_file_compare_name;
container->free_item = (netsnmp_container_obj_func *)
netsnmp_file_container_free;
}
}
else
container = netsnmp_container_find("directory_container:cstring");
if (NULL == container)
return NULL;
container->container_name = strdup(dirname);
/** default to unsorted */
if (! (flags & NETSNMP_DIR_SORTED))
CONTAINER_SET_OPTIONS(container, CONTAINER_KEY_UNSORTED, rc);
}
dir = opendir(dirname);
if (NULL == dir) {
DEBUGMSGTL(("directory:container", " not a dir\n"));
if (container != user_container)
netsnmp_directory_container_free(container);
return NULL;
}
/** copy dirname into path */
if (flags & NETSNMP_DIR_RELATIVE_PATH)
dirname_len = 0;
else {
dirname_len = strlen(dirname);
strlcpy(path, dirname, sizeof(path));
if ((dirname_len + 2) > sizeof(path)) {
/** not enough room for files */
closedir(dir);
if (container != user_container)
netsnmp_directory_container_free(container);
return NULL;
}
path[dirname_len] = '/';
path[++dirname_len] = '\0';
}
/** iterate over dir */
while ((file = readdir(dir))) {
if ((file->d_name == NULL) || (file->d_name[0] == 0))
continue;
/** skip '.' and '..' */
if ((file->d_name[0] == '.') &&
((file->d_name[1] == 0) ||
((file->d_name[1] == '.') && ((file->d_name[2] == 0)))))
continue;
strlcpy(&path[dirname_len], file->d_name, sizeof(path) - dirname_len);
if (NULL != filter) {
if (flags & NETSNMP_DIR_NSFILE_STATS) {
/** use local vars for now */
if (stat(path, &statbuf) != 0) {
snmp_log(LOG_ERR, "could not stat %s\n", file->d_name);
break;
}
ns_file_tmp.stats = &statbuf;
ns_file_tmp.name = path;
rc = (*filter)(&ns_file_tmp, filter_ctx);
}
else
rc = (*filter)(path, filter_ctx);
if (0 == rc) {
DEBUGMSGTL(("directory:container:filtered", "%s\n",
file->d_name));
continue;
}
}
DEBUGMSGTL(("directory:container:found", "%s\n", path));
if ((flags & NETSNMP_DIR_RECURSE)
#if defined(HAVE_STRUCT_DIRENT_D_TYPE) && defined(DT_DIR)
&& (file->d_type == DT_DIR)
#elif defined(S_ISDIR)
&& (stat(file->d_name, &statbuf) != 0) && (S_ISDIR(statbuf.st_mode))
#endif
) {
/** xxx add the dir as well? not for now.. maybe another flag? */
netsnmp_directory_container_read(container, path, flags);
}
else if (flags & NETSNMP_DIR_NSFILE) {
if (_insert_nsfile( container, file->d_name,
filter ? &statbuf : NULL, flags ) < 0)
break;
}
else {
char *dup = strdup(path);
if (NULL == dup) {
snmp_log(LOG_ERR,
"strdup failed while building directory container\n");
break;
}
rc = CONTAINER_INSERT(container, dup);
if (-1 == rc ) {
DEBUGMSGTL(("directory:container", " err adding %s\n", path));
free(dup);
}
}
} /* while */
closedir(dir);
rc = CONTAINER_SIZE(container);
DEBUGMSGTL(("directory:container", " container now has %d items\n", rc));
if ((0 == rc) && !(flags & NETSNMP_DIR_EMPTY_OK)) {
netsnmp_directory_container_free(container);
return NULL;
}
return container;
}
void
netsnmp_directory_container_free(netsnmp_container *container)
{
CONTAINER_FREE_ALL(container, NULL);
CONTAINER_FREE(container);
}
static int
_insert_nsfile( netsnmp_container *c, const char *name, struct stat *stats,
u_int flags)
{
int rc;
netsnmp_file *ns_file = netsnmp_file_new(name, 0, 0, 0);
if (NULL == ns_file) {
snmp_log(LOG_ERR, "error creating ns_file\n");
return -1;
}
if (flags & NETSNMP_DIR_NSFILE_STATS) {
ns_file->stats = (struct stat*)calloc(1,sizeof(*(ns_file->stats)));
if (NULL == ns_file->stats) {
snmp_log(LOG_ERR, "error creating stats for ns_file\n");
netsnmp_file_release(ns_file);
return -1;
}
/** use stats from earlier if we have them */
if (stats)
memcpy(ns_file->stats, stats, sizeof(*stats));
else
stat(ns_file->name, ns_file->stats);
}
rc = CONTAINER_INSERT(c, ns_file);
if (-1 == rc ) {
DEBUGMSGTL(("directory:container", " err adding %s\n", name));
netsnmp_file_release(ns_file);
}
return 0;
}
#else /* NETSNMP_FEATURE_REMOVE_CONTAINER_DIRECTORY */
netsnmp_feature_unused(container_directory);
#endif /* NETSNMP_FEATURE_REMOVE_CONTAINER_DIRECTORY */
|
