如何根據MIB庫自動生成SNMP Agent程式碼--mib2c
一、環境準備
1、linux,samba,網路已連線
通過samba登入到fedora core的虛擬機器上,啟動虛擬機器Fodera core,
ifconfig 檢視eth1網絡卡的ip地址,eth1為橋接到辦公網的網絡卡,假設IP地址為10.10.51.8
通過samba對映到windows,需要先檢查samba服務是否已經啟動
若已啟動samba服務,對映samba目錄
2、MIB庫檔案
二、操作步驟
1、編寫MIB庫檔案
編寫mib檔案,並將mib檔案拷貝至/user/local/share/snmp/mibs目錄下
編寫mib庫的時候如果是表格,不可增刪改的。不需要新增rowstatus,且index必須要設定成read-only,不能設定成not-accessiable
2、設定環境變數,使得可以用mib2c工具來生成相應的.c檔案和.h檔案
cd /user/local/share/snmp/mibs export MIBS=ALL 或 export MIBS=+NSCRTV-ROOT export MIBS=+NSCRTV-EPONEOC-ALARMS-MIB export MIBS=+NSCRTV-EPONEOC-PROPERTY-MIB export MIBS=+NSCRTV-EPONEOC-MOD-EOC-MIB export MIBS=+XXX-MIB # 根據實際的MIB庫名稱調整
3、檢視OID是否能正常輸出
snmptranslate -Ts -m ALL //檢視所有MIB NODE輸出情況 snmptranslate -IR XXXMIBNODE //就可以檢視到某個具體的MIB NODE的相關資訊
4、模板介紹:通過模板生成.c和.h檔案
模板可以採用預設的模板或者自己寫模板,預設的模板在/user/local/share/snmp/目錄下面
進入你要存放生成程式碼的資料夾,通過模板生成.c和.h檔案,預設的模板介紹如下:
scalars型別的節點:mib2c -c mib2c.scalar.conf XXXMIBNODE
Table型別的節點:mib2c -c mib2c.iterate_access.conf XXXMIBNODE
trap型別的節點:mib2c -c mib2c.notify.conf XXXMIBNODE
int scalars型別的節點:mib2c -c mib2c.int_watch.conf MIBNODE
承上,如果按需排序時:mib2c -c mib2c.array-user.conf MIBNODE
如果要產生Table上任一Column的header時:mib2c -c mib2c.column_defines.conf MIBNODE
如果是要產生Column上任一Enum的header時:mib2c -c mib2c.column_enums.conf MIBNODE
命令參考:
env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../../mib2c.scalar.conf eocCBATAdminGroup env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../mib2c.iterate_access.conf eocCBATCardRFTable env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../mib2c.iterate_access.conf eocCBATAdminSNMPCommunityTable env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../../mib2c.notify.conf eocNotifications
5、生成具體過程:
進入你要存放生成程式碼的資料夾,所有的模板在/user/local/share/snmp/目錄下面
# mib2c -c ../../../mib2c.scalar.conf eocCBATAdminGroup
# env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../mib2c.iterate_access.conf eocCBATCardRFTable
# env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../../mib2c.iterate_access.conf eocCBATAdminSNMPCommunityTable
# env MIBS="+NSCRTV-EPONEOC-MOD-EOC-MIB" mib2c -c ../../mib2c.iterate_access.conf eocCBATCardRFTable writing to eocCBATCardRFTable.h writing to eocCBATCardRFTable_columns.h writing to eocCBATCardRFTable_enums.h writing to eocCBATCardRFTable.c writing to eocCBATCardRFTable_checkfns_local.h writing to eocCBATCardRFTable_checkfns_local.c writing to eocCBATCardRFTable_checkfns.h writing to eocCBATCardRFTable_checkfns.c writing to eocCBATCardRFTable_access.h writing to eocCBATCardRFTable_access.c writing to - ********************************************************************** NOTE: The only files you MUST modify should be the following:(要修改的地方) eocCBATCardRFTable_access.c(業務相關) eocCBATCardRFTable_access.h(路徑相關) eocCBATCardRFTable_checkfns_local.h() eocCBATCardRFTable_checkfns_local.c ********************************************************************** running indent on eocCBATCardRFTable_access.c running indent on eocCBATCardRFTable_checkfns.c running indent on eocCBATCardRFTable_access.h running indent on eocCBATCardRFTable_enums.h running indent on eocCBATCardRFTable_columns.h running indent on eocCBATCardRFTable_checkfns_local.h running indent on eocCBATCardRFTable_checkfns_local.c running indent on eocCBATCardRFTable_checkfns.h running indent on eocCBATCardRFTable.h running indent on eocCBATCardRFTable.c #
6.修改程式碼,將修改後的程式碼拷貝至專案net-snmp-5.4.1/agent/mibgroup下面
1.xxxTable_checkfns.h: 修改前: /** make sure we load the functions that you can modify */ config_require(eocVLANTable_checkfns_local) 修改後:修改後的路徑為實際工程中的編譯路徑 /** make sure we load the functions that you can modify */ config_require(eoc/nscrtv/vlanGroup/eocVLANTable_checkfns_local)
2.xxxTable.h 修改前: /** other required module components */ config_require(eocVLANTable_access) config_require(eocVLANTable_checkfns) 修改後: /** other required module components */ config_require(eoc/nscrtv/vlanGroup/eocVLANTable_access) config_require(eoc/nscrtv/vlanGroup/eocVLANTable_checkfns)
3.eocVLANTable.c 修改前: if (!data_context) { ci->data_context = eocVLANTable_create_data_context(table_info->indexes, COLUMN_): ci->new_row = 1; } else { ci->data_context = data_context; } netsnmp_oid_stash_add_data(&commitStorage, suffix + 1, suffix_len - 1, ci); 修改後: if (!data_context) { ci->data_context = eocVLANTable_create_data_context(table_info->indexes, table_info->colnum); ci->new_row = 1; } else { ci->data_context = data_context; } netsnmp_oid_stash_add_data(&commitStorage, suffix + 1, suffix_len - 1, ci);
注意事項:
生成表項的C程式碼的時候執行完命令mib2c ../../mib2c.iterate_access.conf wirelessProdWireless5GTable以後,會提示讓你選擇一些選項:選2 1 2