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For tables use a callback to create indexes, rows etc.

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Kristofer Hallin 2022-05-10 19:22:19 +00:00 • committed by Olof hagsand
parent 4ff2ea099c
commit 9b0cf2f7c4
2 changed files with 40 additions and 117 deletions
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154
apps/snmp/snmp_mib_yang.c
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@ -119,136 +119,56 @@ static const map_str2int snmp_type_map[] = {
};
#if 1 /* table example */
static netsnmp_table_data_set *table_set;
/*
* https://net-snmp.sourceforge.io/dev/agent/data_set_8c-example.html#_a0
*/
int
table_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_table_data_set *table = (netsnmp_table_data_set *)reginfo->my_reg_void;
netsnmp_table_row *row;
row = netsnmp_create_table_data_row();
netsnmp_table_row_add_index(row, ASN_OCTET_STR, "snmpv3", strlen("snmpv3"));
netsnmp_set_row_column(row, 2, ASN_OCTET_STR, "Russ Mundy", strlen("Russ Mundy"));
netsnmp_mark_row_column_writable(row, 2, 1);
netsnmp_set_row_column(row, 3, ASN_OCTET_STR, "David Harrington", strlen("David Harrington"));
netsnmp_mark_row_column_writable(row, 3, 1);
netsnmp_table_dataset_add_row(table, row);
return SNMP_ERR_NOERROR;
}
static void
init_testtable(void)
{
netsnmp_table_row *row;
netsnmp_handler_registration *handler;
netsnmp_table_data_set *table;
/*
* the OID we want to register our integer at. This should be the
* * OID node for the entire table. In our case this is the
* * netSnmpIETFWGTable oid definition
*/
oid my_oid[] = { 1, 3, 6, 1, 4, 1, 8072, 2, 2, 1 };
oid my_registration_oid[] = { 1, 3, 6, 1, 4, 1, 8072, 2, 2, 1 };
/*
* a debugging statement. Run the agent with -Dexample_data_set to see
* * the output of this debugging statement.
*/
DEBUGMSGTL(("example_data_set",
"Initalizing example dataset table\n"));
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET, "/var/run/snmp.sock");
/*
* It's going to be the "working group chairs" table, since I'm
* * sitting at an IETF convention while I'm writing this.
* *
* * column 1 = index = string = WG name
* * column 2 = string = chair #1
* * column 3 = string = chair #2 (most WGs have 2 chairs now)
*/
table = netsnmp_create_table_data_set("netSnmpIETFWGTable");
table_set = netsnmp_create_table_data_set("netSnmpIETFWGTable");
netsnmp_table_dataset_add_index(table, ASN_OCTET_STR);
netsnmp_table_set_multi_add_default_row(table, 2, ASN_OCTET_STR, 1, NULL, 0, 3, ASN_OCTET_STR, 1, NULL, 0, 0);
/*
* allow the creation of new rows via SNMP SETs
*/
table_set->allow_creation = 1;
handler = netsnmp_create_handler_registration("netSnmpIETFWGTable", table_handler,
my_registration_oid,
OID_LENGTH(my_registration_oid),
HANDLER_CAN_RWRITE);
handler->my_reg_void = table;
/*
* set up what a row "should" look like, starting with the index
*/
netsnmp_table_dataset_add_index(table_set, ASN_OCTET_STR);
/*
* define what the columns should look like. both are octet strings here
*/
netsnmp_table_set_multi_add_default_row(table_set,
/*
* column 2 = OCTET STRING,
* writable = 1,
* default value = NULL,
* default value len = 0
*/
2, ASN_OCTET_STR, 1, NULL, 0,
/*
* similar
*/
3, ASN_OCTET_STR, 1, NULL, 0,
0 /* done */ );
/*
* register the table
*/
/*
* if we wanted to handle specific data in a specific way, or note
* * when requests came in we could change the NULL below to a valid
* * handler method in which we could over ride the default
* * behaviour of the table_dataset helper
*/
netsnmp_register_table_data_set(netsnmp_create_handler_registration
("netSnmpIETFWGTable", NULL,
my_oid, OID_LENGTH(my_oid),
HANDLER_CAN_RWRITE), table_set, NULL);
/*
* create the a row for the table, and add the data
*/
row = netsnmp_create_table_data_row();
/*
* set the index to the IETF WG name "snmpv3"
*/
netsnmp_table_row_add_index(row, ASN_OCTET_STR, "snmpv3",
strlen("snmpv3"));
/*
* set column 2 to be the WG chair name "Russ Mundy"
*/
netsnmp_set_row_column(row, 2, ASN_OCTET_STR,
"Russ Mundy", strlen("Russ Mundy"));
netsnmp_mark_row_column_writable(row, 2, 1); /* make writable via SETs */
/*
* set column 3 to be the WG chair name "David Harrington"
*/
netsnmp_set_row_column(row, 3, ASN_OCTET_STR, "David Harrington",
strlen("David Harrington"));
netsnmp_mark_row_column_writable(row, 3, 1); /* make writable via SETs */
/*
* add the row to the table
*/
netsnmp_table_dataset_add_row(table_set, row);
/*
* add the data, for the second row
*/
row = netsnmp_create_table_data_row();
netsnmp_table_row_add_index(row, ASN_OCTET_STR, "snmpconf",
strlen("snmpconf"));
netsnmp_set_row_column(row, 2, ASN_OCTET_STR, "David Partain",
strlen("David Partain"));
netsnmp_mark_row_column_writable(row, 2, 1); /* make writable */
netsnmp_set_row_column(row, 3, ASN_OCTET_STR, "Jon Saperia",
strlen("Jon Saperia"));
netsnmp_mark_row_column_writable(row, 3, 1); /* make writable */
netsnmp_table_dataset_add_row(table_set, row);
/*
* Finally, this actually allows the "add_row" token it the
* * snmpd.conf file to add rows to this table.
* * Example snmpd.conf line:
* * add_row netSnmpIETFWGTable eos "Glenn Waters" "Dale Francisco"
*/
netsnmp_register_auto_data_table(table_set, NULL);
DEBUGMSGTL(("example_data_set", "Done initializing.\n"));
netsnmp_register_table_data_set(handler, table, NULL);
netsnmp_register_auto_data_table(table, NULL);
}
#endif /* table example */