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Create original KEA conf bkp

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Alfredo Cardigliano 2025-11-10 10:53:14 +01:00
parent 76d5f05a23
commit 887ba36201
1 changed files with 18 additions and 6 deletions
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24
scripts/lua/modules/conf_handlers/kea_dhcp_server.lua
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@ -5,6 +5,7 @@
local sys_utils = require "sys_utils"
local json = require "dkjson"
local KEA_CONF_PATH = "/etc/kea/kea-dhcp4.conf"
local KEA_CONF_EXT_PATH = "/etc/ntopng/kea-dhcp4-ext.conf"
local kea_dhcp_server = {}
@ -203,21 +204,32 @@ function kea_dhcp_server.writeDhcpServerConfiguration(dhcp_config, all_interface
end
end
-- Write the Kea DHCP4 configuration file in JSON format
local f = sys_utils.openFile("/etc/kea/kea-dhcp4.conf", "w")
if not f then
traceError(TRACE_ERROR, TRACE_CONSOLE, "Cannot open /etc/kea/kea-dhcp4.conf for writing")
return false
-- Create backup of existing configuration if it doesn't exist
local KEA_CONF_BKP_PATH = KEA_CONF_PATH .. ".bkp"
if sys_utils.file_exists(KEA_CONF_PATH) and
not sys_utils.file_exists(KEA_CONF_BKP_PATH) then
-- Copy the existing configuration to backup
local result = os.execute("cp " .. KEA_CONF_PATH .. " " .. KEA_CONF_BKP_PATH)
if result ~= 0 then
traceError(TRACE_WARNING, TRACE_CONSOLE, "Failed to create backup of " .. KEA_CONF_PATH)
end
end
local json_str = json.encode(kea_config, { indent = true })
if not json_str then
traceError(TRACE_ERROR, TRACE_CONSOLE, "Failed to encode Kea configuration to JSON")
f:close()
return false
end
-- Write the Kea DHCP4 configuration file in JSON format
local f = sys_utils.openFile(KEA_CONF_PATH, "w")
if not f then
traceError(TRACE_ERROR, TRACE_CONSOLE, "Cannot open " .. KEA_CONF_PATH .. " for writing")
return false
end
f:write(json_str)
f:close()
return true