1DEFAULT_STORE(3) Net-SNMP DEFAULT_STORE(3)
2
6 default_store - generic storage of global data.
7
9 #include <net-snmp/net-snmp-config.h>
10 #include <net-snmp/config_api.h>
11 int netsnmp_ds_set_boolean(int store, int which, int val);
13 int netsnmp_ds_get_boolean(int store, int which);
14 int netsnmp_ds_set_int(int store, int which, int val);
15 int netsnmp_ds_get_int(int store, int which);
16 int netsnmp_ds_set_string(int store, int which,
17 const char *val);
18 char *netsnmp_ds_get_string(int store, int which);
19 int netsnmp_ds_register_config(u_char type,
20 const char *ftype,
21 const char *token,
22 int store, int which);
23 int netsnmp_ds_register_premib(u_char type,
24 const char *ftype,
25 const char *token,
26 int store, int which);
27 void netsnmp_ds_shutdown(void);
28
30 The purpose of the default storage is three-fold:
31 1) To create a global storage space without creating a whole bunch
33 of globally accessible variables or a whole bunch of access
34 functions to work with more privately restricted variables.
35 2) To provide a single location where the thread locking needs to
37 be implemented. At the time of this writing, however, thread
38 locking is not yet in place.
39 3) To reduce the number of cross dependencies between code pieces
41 that may or may not be linked together in the long run. This
42 provides for a single location in which configuration data, for
43 example, can be stored for a separate section of code that may
44 not be linked in to the application in question.
45 The functions defined here implement these goals.
47 Currently, three data types are supported: booleans, integers, and
49 strings. Each of these data types have separate storage spaces. In
50 addition, the storage space for each data type is divided further by
51 the application level. Currently, there are two storage spaces. The
52 first is reserved for the SNMP library itself. The second is intended
53 for use in applications and is not modified or checked by the library,
54 and, therefore, this is the space usable by you.
55 You can think of these storage spaces as being 3 arrays, something like
57 bool_storage[storeid][which], int_storage[storeid][which], and
58 string_storage[storeid][which]. The data is then accessed through the
59 functions defined below. For data you wish to store, you should use a
60 store parameter of NETSNMP_DS_APPLICATION_ID.
61 The storage space used by the library (for which the store parameter is
63 NETSNMP_DS_LIBRARY_ID) is defined in the default_store.h file, which
64 currently contains the following defines:
65 */
67 /**
68 * @def NETSNMP_DS_LIBRARY_ID These definitions correspond with the "storid" argument to the API
69 */
70 #define NETSNMP_DS_LIBRARY_ID 0
71 #define NETSNMP_DS_APPLICATION_ID 1
72 #define NETSNMP_DS_TOKEN_ID 2
73 /*
75 * These definitions correspond with the "which" argument to the API,
76 * when the storeid argument is NETSNMP_DS_LIBRARY_ID
77 */
78 /*
79 * library booleans
80 */
81 #define NETSNMP_DS_LIB_MIB_ERRORS 0
82 #define NETSNMP_DS_LIB_SAVE_MIB_DESCRS 1
83 #define NETSNMP_DS_LIB_MIB_COMMENT_TERM 2
84 #define NETSNMP_DS_LIB_MIB_PARSE_LABEL 3
85 #define NETSNMP_DS_LIB_DUMP_PACKET 4
86 #define NETSNMP_DS_LIB_LOG_TIMESTAMP 5
87 #define NETSNMP_DS_LIB_DONT_READ_CONFIGS 6 /* don't read normal config files */
88 #define NETSNMP_DS_LIB_DISABLE_CONFIG_LOAD NETSNMP_DS_LIB_DONT_READ_CONFIGS
89 #define NETSNMP_DS_LIB_MIB_REPLACE 7 /* replace objects from latest module */
90 #define NETSNMP_DS_LIB_PRINT_NUMERIC_ENUM 8 /* print only numeric enum values */
91 #define NETSNMP_DS_LIB_PRINT_NUMERIC_OIDS 9 /* print only numeric enum values */
92 #define NETSNMP_DS_LIB_DONT_BREAKDOWN_OIDS 10 /* dont print oid indexes specially */
93 #define NETSNMP_DS_LIB_ALARM_DONT_USE_SIG 11 /* don't use the alarm() signal */
94 #define NETSNMP_DS_LIB_PRINT_FULL_OID 12 /* print fully qualified oids */
95 #define NETSNMP_DS_LIB_QUICK_PRINT 13 /* print very brief output for parsing */
96 #define NETSNMP_DS_LIB_RANDOM_ACCESS 14 /* random access to oid labels */
97 #define NETSNMP_DS_LIB_REGEX_ACCESS 15 /* regex matching to oid labels */
98 #define NETSNMP_DS_LIB_DONT_CHECK_RANGE 16 /* don't check values for ranges on send */
99 #define NETSNMP_DS_LIB_NO_TOKEN_WARNINGS 17 /* no warn about unknown config tokens */
100 #define NETSNMP_DS_LIB_NUMERIC_TIMETICKS 18 /* print timeticks as a number */
101 #define NETSNMP_DS_LIB_ESCAPE_QUOTES 19 /* shell escape quote marks in oids */
102 #define NETSNMP_DS_LIB_REVERSE_ENCODE 20 /* encode packets from back to front */
103 #define NETSNMP_DS_LIB_PRINT_BARE_VALUE 21 /* just print value (not OID = value) */
104 #define NETSNMP_DS_LIB_EXTENDED_INDEX 22 /* print extended index format [x1][x2] */
105 #define NETSNMP_DS_LIB_PRINT_HEX_TEXT 23 /* print ASCII text along with hex strings */
106 #define NETSNMP_DS_LIB_PRINT_UCD_STYLE_OID 24 /* print OID's using the UCD-style prefix suppression */
107 #define NETSNMP_DS_LIB_READ_UCD_STYLE_OID 25 /* require top-level OIDs to be prefixed with a dot */
108 #define NETSNMP_DS_LIB_HAVE_READ_PREMIB_CONFIG 26 /* have the pre-mib parsing config tokens been processed */
109 #define NETSNMP_DS_LIB_HAVE_READ_CONFIG 27 /* have the config tokens been processed */
110 #define NETSNMP_DS_LIB_QUICKE_PRINT 28
111 #define NETSNMP_DS_LIB_DONT_PRINT_UNITS 29 /* don't print UNITS suffix */
112 #define NETSNMP_DS_LIB_NO_DISPLAY_HINT 30 /* don't apply DISPLAY-HINTs */
113 #define NETSNMP_DS_LIB_16BIT_IDS 31 /* restrict requestIDs, etc to 16-bit values */
114 #define NETSNMP_DS_LIB_DONT_PERSIST_STATE 32 /* don't load config and don't load/save persistent file */
115 #define NETSNMP_DS_LIB_2DIGIT_HEX_OUTPUT 33 /* print a leading 0 on hex values <= 'f' */
116 #define NETSNMP_DS_LIB_IGNORE_NO_COMMUNITY 34 /* don't complain if no community is specified in the command arguments */
117 #define NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD 35 /* don't load persistent file */
118 #define NETSNMP_DS_LIB_DISABLE_PERSISTENT_SAVE 36 /* don't save persistent file */
119 #define NETSNMP_DS_LIB_APPEND_LOGFILES 37 /* append, don't overwrite, log files */
120 #define NETSNMP_DS_LIB_NO_DISCOVERY 38 /* don't support RFC5343 contextEngineID discovery */
121 #define NETSNMP_DS_LIB_TSM_USE_PREFIX 39 /* TSM's simple security name mapping */
122 #define NETSNMP_DS_LIB_ALLOW_SELF_SIGNED 40 /* Certs for DTLS */
123 #define NETSNMP_DS_LIB_CLIENT_ADDR_USES_PORT 42 /* NETSNMP_DS_LIB_CLIENT_ADDR includes address and also port */
124 /*
126 * library integers
127 */
128 #define NETSNMP_DS_LIB_MIB_WARNINGS 0
129 #define NETSNMP_DS_LIB_SECLEVEL 1
130 #define NETSNMP_DS_LIB_SNMPVERSION 2
131 #define NETSNMP_DS_LIB_DEFAULT_PORT 3
132 #define NETSNMP_DS_LIB_OID_OUTPUT_FORMAT 4
133 #define NETSNMP_DS_LIB_PRINT_SUFFIX_ONLY NETSNMP_DS_LIB_OID_OUTPUT_FORMAT
134 #define NETSNMP_DS_LIB_STRING_OUTPUT_FORMAT 5
135 #define NETSNMP_DS_LIB_HEX_OUTPUT_LENGTH 6
136 #define NETSNMP_DS_LIB_SERVERSENDBUF 7 /* send buffer (server) */
137 #define NETSNMP_DS_LIB_SERVERRECVBUF 8 /* receive buffer (server) */
138 #define NETSNMP_DS_LIB_CLIENTSENDBUF 9 /* send buffer (client) */
139 #define NETSNMP_DS_LIB_CLIENTRECVBUF 10 /* receive buffer (client) */
140 #define NETSNMP_DS_SSHDOMAIN_SOCK_PERM 11
141 #define NETSNMP_DS_SSHDOMAIN_DIR_PERM 12
142 #define NETSNMP_DS_SSHDOMAIN_SOCK_USER 12
143 #define NETSNMP_DS_SSHDOMAIN_SOCK_GROUP 13
144 /*
146 * special meanings for the default SNMP version slot (NETSNMP_DS_LIB_SNMPVERSION)
147 */
148 #ifndef NETSNMP_DISABLE_SNMPV1
149 #define NETSNMP_DS_SNMP_VERSION_1 128 /* bogus */
150 #endif
151 #ifndef NETSNMP_DISABLE_SNMPV2C
152 #define NETSNMP_DS_SNMP_VERSION_2c 1 /* real */
153 #endif
154 #define NETSNMP_DS_SNMP_VERSION_3 3 /* real */
155 /*
158 * library strings
159 */
160 #define NETSNMP_DS_LIB_SECNAME 0
161 #define NETSNMP_DS_LIB_CONTEXT 1
162 #define NETSNMP_DS_LIB_PASSPHRASE 2
163 #define NETSNMP_DS_LIB_AUTHPASSPHRASE 3
164 #define NETSNMP_DS_LIB_PRIVPASSPHRASE 4
165 #define NETSNMP_DS_LIB_OPTIONALCONFIG 5
166 #define NETSNMP_DS_LIB_APPTYPE 6
167 #define NETSNMP_DS_LIB_COMMUNITY 7
168 #define NETSNMP_DS_LIB_PERSISTENT_DIR 8
169 #define NETSNMP_DS_LIB_CONFIGURATION_DIR 9
170 #define NETSNMP_DS_LIB_SECMODEL 10
171 #define NETSNMP_DS_LIB_MIBDIRS 11
172 #define NETSNMP_DS_LIB_OIDSUFFIX 12
173 #define NETSNMP_DS_LIB_OIDPREFIX 13
174 #define NETSNMP_DS_LIB_CLIENT_ADDR 14
175 #define NETSNMP_DS_LIB_TEMP_FILE_PATTERN 15
176 #define NETSNMP_DS_LIB_AUTHMASTERKEY 16
177 #define NETSNMP_DS_LIB_PRIVMASTERKEY 17
178 #define NETSNMP_DS_LIB_AUTHLOCALIZEDKEY 18
179 #define NETSNMP_DS_LIB_PRIVLOCALIZEDKEY 19
180 #define NETSNMP_DS_LIB_APPTYPES 20
181 #define NETSNMP_DS_LIB_KSM_KEYTAB 21
182 #define NETSNMP_DS_LIB_KSM_SERVICE_NAME 22
183 /* for the client */
184 #define NETSNMP_DS_LIB_X509_CLIENT_PUB 23
185 #define NETSNMP_DS_LIB_X509_CLIENT_PRIV 24
186 #define NETSNMP_DS_LIB_X509_SERVER_CERTS 25
187 /* for the server */
188 #define NETSNMP_DS_LIB_X509_SERVER_PUB 26
189 #define NETSNMP_DS_LIB_X509_SERVER_PRIV 27
190 #define NETSNMP_DS_LIB_X509_CLIENT_CERTS 28
191 #define NETSNMP_DS_LIB_SSHTOSNMP_SOCKET 29
192 /*
194
196 int netsnmp_ds_set_boolean(int store, int which, int val);
197 Stores TRUE if val != 0 or else FALSE into the bool_stor‐
198 age[store][which] slot. Returns SNMPERR_GENERR if the store and
199 which parameters do not correspond to a valid slot, or SNM‐
200 PERR_SUCCESS otherwise.
201 int netsnmp_ds_get_boolean(int store, int which);
203 Returns 1 if bool_storage[store][which] is TRUE or 0 if not.
204 May also return SNMPERR_GENERR if the store and which parameters
205 do not correspond to a valid slot.
206 int netsnmp_ds_set_string(int store, int which, const char *val);
208 Stores val into the string_storage[store][which] slot. Returns
209 SNMPERR_SUCCESS normally, or SNMPERR_GENERR if the store and
210 which parameters do not correspond to a valid slot.
211 char *netsnmp_ds_get_string(int store, int which);
213 Returns the string which has been stored in the string_stor‐
214 age[store][which] slot, or NULL if the store and which parame‐
215 ters do not correspond to a valid slot.
216 netsnmp_ds_set_int(int store, int which, int val);
218 Stores val into the int_storage[store][which] slot. Returns
219 SNMPERR_GENERR if the store and which parameters do not corre‐
220 spond to a valid slot, or SNMPERR_SUCCESS otherwise.
221 int netsnmp_ds_get_int(int store, int which);
223 Returns the integer which has been stored in the int_stor‐
224 age[store][which] slot, or SNMPERR_GENERR if the store and which
225 parameters do not correspond to a valid slot.
226 void netsnmp_ds_shutdown(void);
228 Reclaims memory used to hold information gathered by net‐
229 snmp_ds_register_config and netsnmp_ds_register_premib.
230 int netsnmp_ds_register_config(u_char type, const char *ftype, const
232 char *token, int store, int which);
233 Registers a configuration file directive token and attaches it
234 to a default storage type and slot. Specifically, store and
235 which indicate the storage slot in the data type indicated by
236 type, where type is one of the following constants: ASN_BOOLEAN,
237 ASN_INTEGER, or ASN_OCTET_STR. The ftype variable indicates the
238 file name base string searched for the token keyword. For exam‐
239 ple, the following call:
240 netsnmp_ds_register_config(ASN_INTEGER, "snmp", "testto‐
242 ken", DS_APPLICATION_ID, 5)
243 would indicate that when the snmp.conf file(s) were found and
245 parsed, that any line beginning with the word "testtoken" should
246 be read and the value after "testtoken" should be stored into
247 the int_storage[DS_APPLICATION_ID][5] slot. For example the
248 following line in the configuration file:
249 testtoken 502
251 would set int_storage[DS_APPLICATION_ID][5] = 502. This func‐
253 tion returns SNMPERR_SUCCESS if the registration was made suc‐
254 cessfully, or SNMPERR_GENERR if the registration was not made
255 (perhaps because the store and which parameters do not corre‐
256 spond to a valid slot, or because of a memory allocation fail‐
257 ure).
258 int netsnmp_ds_register_premib(u_char type, const char *ftype, const
260 char *token, int store, int which);
261 Analogous to the preceeding function, but the token is processed
262 before MIBs are read (this is therefore useful for controlling
263 MIB processing options).
264
266 snmp_config(5), read_config(3)
2674.2 Berkeley Distribution 25 Jun 2002 DEFAULT_STORE(3)