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 /*
122 * library integers
123 */
124 #define NETSNMP_DS_LIB_MIB_WARNINGS 0
125 #define NETSNMP_DS_LIB_SECLEVEL 1
126 #define NETSNMP_DS_LIB_SNMPVERSION 2
127 #define NETSNMP_DS_LIB_DEFAULT_PORT 3
128 #define NETSNMP_DS_LIB_OID_OUTPUT_FORMAT 4
129 #define NETSNMP_DS_LIB_PRINT_SUFFIX_ONLY NETSNMP_DS_LIB_OID_OUTPUT_FORMAT
130 #define NETSNMP_DS_LIB_STRING_OUTPUT_FORMAT 5
131 #define NETSNMP_DS_LIB_HEX_OUTPUT_LENGTH 6
132 #define NETSNMP_DS_LIB_SERVERSENDBUF 7 /* send buffer (server) */
133 #define NETSNMP_DS_LIB_SERVERRECVBUF 8 /* receive buffer (server) */
134 #define NETSNMP_DS_LIB_CLIENTSENDBUF 9 /* send buffer (client) */
135 #define NETSNMP_DS_LIB_CLIENTRECVBUF 10 /* receive buffer (client) */
136 /*
138 * special meanings for the default SNMP version slot (NETSNMP_DS_LIB_SNMPVERSION)
139 */
140 #ifndef NETSNMP_DISABLE_SNMPV1
141 #define NETSNMP_DS_SNMP_VERSION_1 128 /* bogus */
142 #endif
143 #ifndef NETSNMP_DISABLE_SNMPV2C
144 #define NETSNMP_DS_SNMP_VERSION_2c 1 /* real */
145 #endif
146 #define NETSNMP_DS_SNMP_VERSION_3 3 /* real */
147 /*
150 * library strings
151 */
152 #define NETSNMP_DS_LIB_SECNAME 0
153 #define NETSNMP_DS_LIB_CONTEXT 1
154 #define NETSNMP_DS_LIB_PASSPHRASE 2
155 #define NETSNMP_DS_LIB_AUTHPASSPHRASE 3
156 #define NETSNMP_DS_LIB_PRIVPASSPHRASE 4
157 #define NETSNMP_DS_LIB_OPTIONALCONFIG 5
158 #define NETSNMP_DS_LIB_APPTYPE 6
159 #define NETSNMP_DS_LIB_COMMUNITY 7
160 #define NETSNMP_DS_LIB_PERSISTENT_DIR 8
161 #define NETSNMP_DS_LIB_CONFIGURATION_DIR 9
162 #define NETSNMP_DS_LIB_SECMODEL 10
163 #define NETSNMP_DS_LIB_MIBDIRS 11
164 #define NETSNMP_DS_LIB_OIDSUFFIX 12
165 #define NETSNMP_DS_LIB_OIDPREFIX 13
166 #define NETSNMP_DS_LIB_CLIENT_ADDR 14
167 #define NETSNMP_DS_LIB_TEMP_FILE_PATTERN 15
168 #define NETSNMP_DS_LIB_AUTHMASTERKEY 16
169 #define NETSNMP_DS_LIB_PRIVMASTERKEY 17
170 #define NETSNMP_DS_LIB_AUTHLOCALIZEDKEY 18
171 #define NETSNMP_DS_LIB_PRIVLOCALIZEDKEY 19
172 #define NETSNMP_DS_LIB_APPTYPES 20
173 #define NETSNMP_DS_LIB_KSM_KEYTAB 21
174 #define NETSNMP_DS_LIB_KSM_SERVICE_NAME 22
175 /*
177
179 int netsnmp_ds_set_boolean(int store, int which, int val);
180 Stores TRUE if val != 0 or else FALSE into the bool_stor‐
181 age[store][which] slot. Returns SNMPERR_GENERR if the store and
182 which parameters do not correspond to a valid slot, or SNM‐
183 PERR_SUCCESS otherwise.
184 int netsnmp_ds_get_boolean(int store, int which);
186 Returns 1 if bool_storage[store][which] is TRUE or 0 if not.
187 May also return SNMPERR_GENERR if the store and which parameters
188 do not correspond to a valid slot.
189 int netsnmp_ds_set_string(int store, int which, const char *val);
191 Stores val into the string_storage[store][which] slot. Returns
192 SNMPERR_SUCCESS normally, or SNMPERR_GENERR if the store and
193 which parameters do not correspond to a valid slot.
194 char *netsnmp_ds_get_string(int store, int which);
196 Returns the string which has been stored in the string_stor‐
197 age[store][which] slot, or NULL if the store and which parame‐
198 ters do not correspond to a valid slot.
199 netsnmp_ds_set_int(int store, int which, int val);
201 Stores val into the int_storage[store][which] slot. Returns
202 SNMPERR_GENERR if the store and which parameters do not corre‐
203 spond to a valid slot, or SNMPERR_SUCCESS otherwise.
204 int netsnmp_ds_get_int(int store, int which);
206 Returns the integer which has been stored in the int_stor‐
207 age[store][which] slot, or SNMPERR_GENERR if the store and which
208 parameters do not correspond to a valid slot.
209 void netsnmp_ds_shutdown(void);
211 Reclaims memory used to hold information gathered by net‐
212 snmp_ds_register_config and netsnmp_ds_register_premib.
213 int netsnmp_ds_register_config(u_char type, const char *ftype, const
215 char *token, int store, int which);
216 Registers a configuration file directive token and attaches it
217 to a default storage type and slot. Specifically, store and
218 which indicate the storage slot in the data type indicated by
219 type, where type is one of the following constants: ASN_BOOLEAN,
220 ASN_INTEGER, or ASN_OCTET_STR. The ftype variable indicates the
221 file name base string searched for the token keyword. For exam‐
222 ple, the following call:
223 netsnmp_ds_register_config(ASN_INTEGER, "snmp", "testto‐
225 ken", DS_APPLICATION_ID, 5)
226 would indicate that when the snmp.conf file(s) were found and
228 parsed, that any line beginning with the word "testtoken" should
229 be read and the value after "testtoken" should be stored into
230 the int_storage[DS_APPLICATION_ID][5] slot. For example the
231 following line in the configuration file:
232 testtoken 502
234 would set int_storage[DS_APPLICATION_ID][5] = 502. This func‐
236 tion returns SNMPERR_SUCCESS if the registration was made suc‐
237 cessfully, or SNMPERR_GENERR if the registration was not made
238 (perhaps because the store and which parameters do not corre‐
239 spond to a valid slot, or because of a memory allocation fail‐
240 ure).
241 int netsnmp_ds_register_premib(u_char type, const char *ftype, const
243 char *token, int store, int which);
244 Analogous to the preceeding function, but the token is processed
245 before MIBs are read (this is therefore useful for controlling
246 MIB processing options).
247
249 snmp_config(5), read_config(3)
2504.2 Berkeley Distribution 25 Jun 2002 DEFAULT_STORE(3)