DEFAULT_STORE - Online Linux Manual PageSection : 3
Updated : 25 Jun 2002
Source : V5.5
Note : Net-SNMP
Version : 4.2 Berkeley Distribution
NAMEdefault_store − generic storage of global data.
SYNOPSIS#include <net-snmp/net-snmp-config.h>
#include <net-snmp/config_api.h> int netsnmp_ds_set_boolean(int store, int which, int val);
int netsnmp_ds_get_boolean(int store, int which);
int netsnmp_ds_set_int(int store, int which, int val);
int netsnmp_ds_get_int(int store, int which);
int netsnmp_ds_set_string(int store, int which,
const char *val);
char *netsnmp_ds_get_string(int store, int which);
int netsnmp_ds_register_config(u_char type,
const char *ftype,
const char *token,
int store, int which);
int netsnmp_ds_register_premib(u_char type,
const char *ftype,
const char *token,
int store, int which);
void netsnmp_ds_shutdown(void); .fi
DESCRIPTIONThe purpose of the default storage is three-fold: 1) To create a global storage space without creating a whole bunch of globally accessible variables or a whole bunch of access functions to work with more privately restricted variables. 2) To provide a single location where the thread locking needs to be implemented. At the time of this writing, however, thread locking is not yet in place. 3) To reduce the number of cross dependencies between code pieces that may or may not be linked together in the long run. This provides for a single location in which configuration data, for example, can be stored for a separate section of code that may not be linked in to the application in question. The functions defined here implement these goals. Currently, three data types are supported: booleans, integers, and strings. Each of these data types have separate storage spaces. In addition, the storage space for each data type is divided further by the application level. Currently, there are two storage spaces. The first is reserved for the SNMP library itself. The second is intended for use in applications and is not modified or checked by the library, and, therefore, this is the space usable by you. You can think of these storage spaces as being 3 arrays, something like bool_storage[storeid][which], int_storage[storeid][which], and string_storage[storeid][which]. The data is then accessed through the functions defined below. For data you wish to store, you should use a store parameter of NETSNMP_DS_APPLICATION_ID. The storage space used by the library (for which the store parameter is NETSNMP_DS_LIBRARY_ID) is defined in the default_store.h file, which currently contains the following defines: */
/**
* @def NETSNMP_DS_LIBRARY_ID These definitions correspond with the "storid" argument to the API
*/
#define NETSNMP_DS_LIBRARY_ID 0
#define NETSNMP_DS_APPLICATION_ID 1
#define NETSNMP_DS_TOKEN_ID 2
/*
* These definitions correspond with the "which" argument to the API,
* when the storeid argument is NETSNMP_DS_LIBRARY_ID
*/
/*
* library booleans
*/
#define NETSNMP_DS_LIB_MIB_ERRORS 0
#define NETSNMP_DS_LIB_SAVE_MIB_DESCRS 1
#define NETSNMP_DS_LIB_MIB_COMMENT_TERM 2
#define NETSNMP_DS_LIB_MIB_PARSE_LABEL 3
#define NETSNMP_DS_LIB_DUMP_PACKET 4
#define NETSNMP_DS_LIB_LOG_TIMESTAMP 5
#define NETSNMP_DS_LIB_DONT_READ_CONFIGS 6 /* don't read normal config files */
#define NETSNMP_DS_LIB_DISABLE_CONFIG_LOAD NETSNMP_DS_LIB_DONT_READ_CONFIGS
#define NETSNMP_DS_LIB_MIB_REPLACE 7 /* replace objects from latest module */
#define NETSNMP_DS_LIB_PRINT_NUMERIC_ENUM 8 /* print only numeric enum values */
#define NETSNMP_DS_LIB_PRINT_NUMERIC_OIDS 9 /* print only numeric enum values */
#define NETSNMP_DS_LIB_DONT_BREAKDOWN_OIDS 10 /* dont print oid indexes specially */
#define NETSNMP_DS_LIB_ALARM_DONT_USE_SIG 11 /* don't use the alarm() signal */
#define NETSNMP_DS_LIB_PRINT_FULL_OID 12 /* print fully qualified oids */
#define NETSNMP_DS_LIB_QUICK_PRINT 13 /* print very brief output for parsing */
#define NETSNMP_DS_LIB_RANDOM_ACCESS 14 /* random access to oid labels */
#define NETSNMP_DS_LIB_REGEX_ACCESS 15 /* regex matching to oid labels */
#define NETSNMP_DS_LIB_DONT_CHECK_RANGE 16 /* don't check values for ranges on send */
#define NETSNMP_DS_LIB_NO_TOKEN_WARNINGS 17 /* no warn about unknown config tokens */
#define NETSNMP_DS_LIB_NUMERIC_TIMETICKS 18 /* print timeticks as a number */
#define NETSNMP_DS_LIB_ESCAPE_QUOTES 19 /* shell escape quote marks in oids */
#define NETSNMP_DS_LIB_REVERSE_ENCODE 20 /* encode packets from back to front */
#define NETSNMP_DS_LIB_PRINT_BARE_VALUE 21 /* just print value (not OID = value) */
#define NETSNMP_DS_LIB_EXTENDED_INDEX 22 /* print extended index format [x1][x2] */
#define NETSNMP_DS_LIB_PRINT_HEX_TEXT 23 /* print ASCII text along with hex strings */
#define NETSNMP_DS_LIB_PRINT_UCD_STYLE_OID 24 /* print OID's using the UCD-style prefix suppression */
#define NETSNMP_DS_LIB_READ_UCD_STYLE_OID 25 /* require top-level OIDs to be prefixed with a dot */
#define NETSNMP_DS_LIB_HAVE_READ_PREMIB_CONFIG 26 /* have the pre-mib parsing config tokens been processed */
#define NETSNMP_DS_LIB_HAVE_READ_CONFIG 27 /* have the config tokens been processed */
#define NETSNMP_DS_LIB_QUICKE_PRINT 28
#define NETSNMP_DS_LIB_DONT_PRINT_UNITS 29 /* don't print UNITS suffix */
#define NETSNMP_DS_LIB_NO_DISPLAY_HINT 30 /* don't apply DISPLAY-HINTs */
#define NETSNMP_DS_LIB_16BIT_IDS 31 /* restrict requestIDs, etc to 16-bit values */
#define NETSNMP_DS_LIB_DONT_PERSIST_STATE 32 /* don't load config and don't load/save persistent file */
#define NETSNMP_DS_LIB_2DIGIT_HEX_OUTPUT 33 /* print a leading 0 on hex values <= 'f' */
#define NETSNMP_DS_LIB_IGNORE_NO_COMMUNITY 34 /* don't complain if no community is specified in the command arguments */
#define NETSNMP_DS_LIB_DISABLE_PERSISTENT_LOAD 35 /* don't load persistent file */
#define NETSNMP_DS_LIB_DISABLE_PERSISTENT_SAVE 36 /* don't save persistent file */
#define NETSNMP_DS_LIB_APPEND_LOGFILES 37 /* append, don't overwrite, log files */
#define NETSNMP_DS_LIB_NO_DISCOVERY 38 /* don't support RFC5343 contextEngineID discovery */
#define NETSNMP_DS_LIB_TSM_USE_PREFIX 39 /* TSM's simple security name mapping */
#define NETSNMP_DS_LIB_ALLOW_SELF_SIGNED 40 /* Certs for DTLS */
#define NETSNMP_DS_LIB_CLIENT_ADDR_USES_PORT 42 /* NETSNMP_DS_LIB_CLIENT_ADDR includes address and also port */
/*
* library integers
*/
#define NETSNMP_DS_LIB_MIB_WARNINGS 0
#define NETSNMP_DS_LIB_SECLEVEL 1
#define NETSNMP_DS_LIB_SNMPVERSION 2
#define NETSNMP_DS_LIB_DEFAULT_PORT 3
#define NETSNMP_DS_LIB_OID_OUTPUT_FORMAT 4
#define NETSNMP_DS_LIB_PRINT_SUFFIX_ONLY NETSNMP_DS_LIB_OID_OUTPUT_FORMAT
#define NETSNMP_DS_LIB_STRING_OUTPUT_FORMAT 5
#define NETSNMP_DS_LIB_HEX_OUTPUT_LENGTH 6
#define NETSNMP_DS_LIB_SERVERSENDBUF 7 /* send buffer (server) */
#define NETSNMP_DS_LIB_SERVERRECVBUF 8 /* receive buffer (server) */
#define NETSNMP_DS_LIB_CLIENTSENDBUF 9 /* send buffer (client) */
#define NETSNMP_DS_LIB_CLIENTRECVBUF 10 /* receive buffer (client) */
#define NETSNMP_DS_SSHDOMAIN_SOCK_PERM 11
#define NETSNMP_DS_SSHDOMAIN_DIR_PERM 12
#define NETSNMP_DS_SSHDOMAIN_SOCK_USER 12
#define NETSNMP_DS_SSHDOMAIN_SOCK_GROUP 13
/*
* special meanings for the default SNMP version slot (NETSNMP_DS_LIB_SNMPVERSION)
*/
#ifndef NETSNMP_DISABLE_SNMPV1
#define NETSNMP_DS_SNMP_VERSION_1 128 /* bogus */
#endif
#ifndef NETSNMP_DISABLE_SNMPV2C
#define NETSNMP_DS_SNMP_VERSION_2c 1 /* real */
#endif
#define NETSNMP_DS_SNMP_VERSION_3 3 /* real */
/*
* library strings
*/
#define NETSNMP_DS_LIB_SECNAME 0
#define NETSNMP_DS_LIB_CONTEXT 1
#define NETSNMP_DS_LIB_PASSPHRASE 2
#define NETSNMP_DS_LIB_AUTHPASSPHRASE 3
#define NETSNMP_DS_LIB_PRIVPASSPHRASE 4
#define NETSNMP_DS_LIB_OPTIONALCONFIG 5
#define NETSNMP_DS_LIB_APPTYPE 6
#define NETSNMP_DS_LIB_COMMUNITY 7
#define NETSNMP_DS_LIB_PERSISTENT_DIR 8
#define NETSNMP_DS_LIB_CONFIGURATION_DIR 9
#define NETSNMP_DS_LIB_SECMODEL 10
#define NETSNMP_DS_LIB_MIBDIRS 11
#define NETSNMP_DS_LIB_OIDSUFFIX 12
#define NETSNMP_DS_LIB_OIDPREFIX 13
#define NETSNMP_DS_LIB_CLIENT_ADDR 14
#define NETSNMP_DS_LIB_TEMP_FILE_PATTERN 15
#define NETSNMP_DS_LIB_AUTHMASTERKEY 16
#define NETSNMP_DS_LIB_PRIVMASTERKEY 17
#define NETSNMP_DS_LIB_AUTHLOCALIZEDKEY 18
#define NETSNMP_DS_LIB_PRIVLOCALIZEDKEY 19
#define NETSNMP_DS_LIB_APPTYPES 20
#define NETSNMP_DS_LIB_KSM_KEYTAB 21
#define NETSNMP_DS_LIB_KSM_SERVICE_NAME 22
/* for the client */
#define NETSNMP_DS_LIB_X509_CLIENT_PUB 23
#define NETSNMP_DS_LIB_X509_CLIENT_PRIV 24
#define NETSNMP_DS_LIB_X509_SERVER_CERTS 25
/* for the server */
#define NETSNMP_DS_LIB_X509_SERVER_PUB 26
#define NETSNMP_DS_LIB_X509_SERVER_PRIV 27
#define NETSNMP_DS_LIB_X509_CLIENT_CERTS 28
#define NETSNMP_DS_LIB_SSHTOSNMP_SOCKET 29
/*
FUNCTIONSint netsnmp_ds_set_boolean(int store, int which, int val); Stores TRUE if val != 0 or else FALSE into the bool_storage[store][which] slot. Returns SNMPERR_GENERR if the store and which parameters do not correspond to a valid slot, or SNMPERR_SUCCESS otherwise. int netsnmp_ds_get_boolean(int store, int which); Returns 1 if bool_storage[store][which] is TRUE or 0 if not. May also return SNMPERR_GENERR if the store and which parameters do not correspond to a valid slot. int netsnmp_ds_set_string(int store, int which, const char *val); Stores val into the string_storage[store][which] slot. Returns SNMPERR_SUCCESS normally, or SNMPERR_GENERR if the store and which parameters do not correspond to a valid slot. char *netsnmp_ds_get_string(int store, int which); Returns the string which has been stored in the string_storage[store][which] slot, or NULL if the store and which parameters do not correspond to a valid slot. netsnmp_ds_set_int(int store, int which, int val); Stores val into the int_storage[store][which] slot. Returns SNMPERR_GENERR if the store and which parameters do not correspond to a valid slot, or SNMPERR_SUCCESS otherwise. int netsnmp_ds_get_int(int store, int which); Returns the integer which has been stored in the int_storage[store][which] slot, or SNMPERR_GENERR if the store and which parameters do not correspond to a valid slot. void netsnmp_ds_shutdown(void); Reclaims memory used to hold information gathered by netsnmp_ds_register_config and netsnmp_ds_register_premib. int netsnmp_ds_register_config(u_char type, const char *ftype, const char *token, int store, int which); Registers a configuration file directive token and attaches it to a default storage type and slot. Specifically, store and which indicate the storage slot in the data type indicated by type, where type is one of the following constants: ASN_BOOLEAN, ASN_INTEGER, or ASN_OCTET_STR. The ftype variable indicates the file name base string searched for the token keyword. For example, the following call: netsnmp_ds_register_config(ASN_INTEGER, "snmp", "testtoken", DS_APPLICATION_ID, 5) would indicate that when the snmp.conf file(s) were found and parsed, that any line beginning with the word "testtoken" should be read and the value after "testtoken" should be stored into the int_storage[DS_APPLICATION_ID][5] slot. For example the following line in the configuration file: testtoken 502 would set int_storage[DS_APPLICATION_ID][5] = 502. This function returns SNMPERR_SUCCESS if the registration was made successfully, or SNMPERR_GENERR if the registration was not made (perhaps because the store and which parameters do not correspond to a valid slot, or because of a memory allocation failure). int netsnmp_ds_register_premib(u_char type, const char *ftype, const char *token, int store, int which); Analogous to the preceeding function, but the token is processed before MIBs are read (this is therefore useful for controlling MIB processing options).
SEE ALSOsnmp_config(5), read_config (3)" 0
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