luci: reduce duplicate code

luci-app-passwall/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=luci-app-passwall
 PKG_VERSION:=4.61
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_CONFIG_DEPENDS:= \
 	CONFIG_PACKAGE_$(PKG_NAME)_Iptables_Transparent_Proxy \

luci-app-passwall/luasrc/passwall/api.lua

@@ -17,6 +17,15 @@ DISTRIB_ARCH = nil
 LOG_FILE = "/tmp/log/" .. appname .. ".log"
 CACHE_PATH = "/tmp/etc/" .. appname .. "_tmp"
 
+function log(...)
+    local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
+    local f, err = io.open(LOG_FILE, "a")
+    if f and err == nil then
+        f:write(result .. "\n")
+        f:close()
+    end
+end
+
 function exec_call(cmd)
 	local process = io.popen(cmd .. '; echo -e "\n$?"')
 	local lines = {}

luci-app-passwall/root/usr/share/passwall/haproxy.lua

@@ -8,12 +8,7 @@ local uci = api.uci
 local sys = api.sys
 
 local log = function(...)
-    local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
-    local f, err = io.open("/tmp/log/passwall.log", "a")
-    if f and err == nil then
-        f:write(result .. "\n")
-        f:close()
-    end
+    api.log(...)
 end
 
 function get_ip_port_from(str)

luci-app-passwall/root/usr/share/passwall/helper_dnsmasq_add.lua

@@ -16,7 +16,6 @@ local PROXY_MODE = var["-PROXY_MODE"]
 local NO_PROXY_IPV6 = var["-NO_PROXY_IPV6"]
 local NO_LOGIC_LOG = var["-NO_LOGIC_LOG"]
 local NFTFLAG = var["-NFTFLAG"]
-local LOG_FILE = api.LOG_FILE
 local CACHE_PATH = api.CACHE_PATH
 local CACHE_FLAG = "dnsmasq_" .. FLAG
 local CACHE_DNS_PATH = CACHE_PATH .. "/" .. CACHE_FLAG
@@ -36,12 +35,7 @@ local function log(...)
 	if NO_LOGIC_LOG == "1" then
 		return
 	end
-	local f, err = io.open(LOG_FILE, "a")
-	if f and err == nil then
-		local str = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
-		f:write(str .. "\n")
-		f:close()
-	end
+	api.log(...)
 end
 
 local function check_dns(domain, dns)

luci-app-passwall/root/usr/share/passwall/rule_update.lua

@@ -36,14 +36,10 @@ local v2ray_asset_location = ucic:get_first(name, 'global_rules', "v2ray_locatio
 
 local log = function(...)
 	if arg1 then
-		local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
 		if arg1 == "log" then
-			local f, err = io.open("/tmp/log/passwall.log", "a")
-			if f and err == nil then
-				f:write(result .. "\n")
-				f:close()
-			end
+			api.log(...)
 		elseif arg1 == "print" then
+			local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
 			print(result)
 		end
 	end

luci-app-passwall/root/usr/share/passwall/subscribe.lua

@@ -83,15 +83,11 @@ local nodeResult = {} -- update result
 local debug = false
 
 local log = function(...)
-	local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
 	if debug == true then
+		local result = os.date("%Y-%m-%d %H:%M:%S: ") .. table.concat({...}, " ")
 		print(result)
 	else
-		local f, err = io.open("/tmp/log/" .. appname .. ".log", "a")
-		if f and err == nil then
-			f:write(result .. "\n")
-			f:close()
-		end
+		api.log(...)
 	end
 end