update readme

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "go.buildFlags": ["-tags=linux"],
+}

Makefile

@@ -0,0 +1,27 @@
+REPO_NAME=go-loader-test
+REPO_LINK=https://git.aliberksandikci.com.tr/asandikci/${REPO_NAME}
+
+DATA_DIR=/etc/go-loader-test/
+LIB_DIR=/usr/share/go-loader-test/
+PLUGIN_DIR=${LIB_DIR}/plugins/
+TEMP_DIR=$(mktemp -d)
+MAIN_DIR=${TEMP_DIR}/${REPO_NAME}/
+
+
+install:
+	sudo go build -o ${DESTDIR}/usr/bin/${REPO_NAME} ./cmd/go-loader-test/
+	@sudo mkdir -p "${DESTDIR}/${LIB_DIR}"
+	@sudo mkdir -p "${DESTDIR}/${PLUGIN_DIR}"
+
+	sudo go build -buildmode=plugin -o ${DESTDIR}/${PLUGIN_DIR}/tmptest.so ./plugins/tmptest
+	@sudo mkdir -p "${DESTDIR}/${DATA_DIR}"
+
+windows_install:
+	sudo env GOOS=windows GOARCH=amd64 go build -o ${DESTDIR}/usr/bin/${REPO_NAME} ./cmd/go-loader-test/
+	@sudo mkdir -p "${DESTDIR}/${LIB_DIR}"
+	@sudo mkdir -p "${DESTDIR}/${PLUGIN_DIR}"
+
+	sudo GOOS=windows GOARCH=amd64 go build -buildmode=plugin -o ${DESTDIR}/${PLUGIN_DIR}/tmptest.so ./plugins/tmptest
+	@sudo mkdir -p "${DESTDIR}/${DATA_DIR}"
+uninstall:
+	@sudo rm -rf ${DESTDIR}/usr/bin/${REPO_NAME}

README.md

@@ -1,8 +1,13 @@
-- test for plugin and goloader logics
+This branch uses unofficial goloader implementation, see https://pkg.go.dev/github.com/eh-steve/goloader, https://github.com/eh-steve/goloader and https://git.aliberksandikci.com.tr/Liderahenk/ahenk-docs/src/branch/main/dev/resources.md#goloader-plugin-logic for more information
-- contains some parts from https://git.aliberksandikci.com.tr/Liderahenk/ahenk-go
 
-- official plugin logic: https://pkg.go.dev/plugin - [branch](https://git.aliberksandikci.com.tr/asandikci/go-loader-test/src/branch/original-plugin)
+---
-- goloader plugin logic: https://github.com/eh-steve/goloader - [branch](https://git.aliberksandikci.com.tr/asandikci/go-loader-test/src/branch/eh-steve/goloader)
+# Pros
-- goloader plugin logic + [crosscompile](git.aliberksandikci.com.tr/asandikci/go-crosscompile) - [branch](https://git.aliberksandikci.com.tr/asandikci/go-loader-test/src/branch/eh-steve/goloader+crosscompile) 
+- Fast, Lightweight
-
+- **Can be unload**
-- see [branches](https://git.aliberksandikci.com.tr/asandikci/go-loader-test/branches) for more
+- **Can be use with windows**
+- Can build go programs in runtime 
+# Cons
+- Unofficial
+- Changes default go configs and compiler settings !!
+- Missing Security features ?
+- Missing feature: use precompiled binaries

cmd/go-loader-test/main.go

@@ -0,0 +1,22 @@
+package main
+
+import (
+	"log"
+	"os"
+)
+
+const ExecutablePath = "/usr/bin/go-loader-test"
+const DataDir = "/etc/go-loader-test/"
+const LogFile = DataDir + "go-loader-test"
+const LibDir = "/usr/share/go-loader-test/"
+const PluginDir = LibDir + "/plugins/"
+
+// Main Function that starts daemon and controls arguments
+func main() {
+	if len(os.Args) == 2 && os.Args[1] == "tmptest" {
+		log.Print("TEMPORARY TEST STARTED, log files are NOT redirecting!")
+		PluginManager("tmptest")
+	} else {
+		panic("Please enter a valid option !")
+	}
+}

cmd/go-loader-test/plugin-manager.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/eh-steve/goloader/jit"
+)
+
+func PluginManager(params ...string) {
+	conf := jit.BuildConfig{
+		KeepTempFiles:   false,                    // Files are copied/written to a temp dir to ensure it is writable. This retains the temporary copies
+		ExtraBuildFlags: []string{"-x"},           // Flags passed to go build command
+		BuildEnv:        []string{"GOOS=windows"}, // Env vars to set for go build toolchain
+		TmpDir:          "/tmp/inner",             // To control where temporary files are copied
+		DebugLog:        true,                     //
+	}
+
+	loadable, err := jit.BuildGoPackage(conf, "plugins/tmptest/")
+	if err != nil {
+		panic(err)
+	}
+
+	module, err := loadable.Load()
+	// module.SymbolsByPkg is a map[string]map[string]interface{} of all packages and their exported functions and global vars
+	symbols := module.SymbolsByPkg[loadable.ImportPath]
+	if err != nil {
+		panic(err)
+	}
+	// defer func() {
+	// 	err = module.Unload()
+	// 	if err != nil {
+	// 		panic(err)
+	// 	}
+	// }()
+	switch f := symbols["MyFunc"].(type) {
+	case func([]byte) (interface{}, error):
+		result, err := f([]byte(`{"k":"v"}`))
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(result)
+	default:
+		fmt.Println(f)
+		panic("Function signature was not what was expected")
+	}
+
+	err = module.Unload()
+	if err != nil {
+		panic(err)
+	}
+}

cmd/go-loader-test/plugin-opener.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"plugin"
+
+	"git.aliberksandikci.com.tr/asandikci/go-loader-test/pkg/utils"
+)
+
+func LoadPlugin(plugName string, chn chan interface{}) {
+
+	plug, err := plugin.Open(PluginDir + plugName + ".so")
+	utils.Check(err)
+
+	symPlug, err := plug.Lookup(utils.FirstUpperEN(plugName) + "Connect")
+	utils.Check(err)
+
+	var plugOut interface{}
+	plugOut, ok := symPlug.(interface{})
+	if !ok {
+		fmt.Println("unexpected type from module symbol")
+		os.Exit(1)
+	}
+	chn <- plugOut
+}

go.mod

@@ -0,0 +1,10 @@
+module git.aliberksandikci.com.tr/asandikci/go-loader-test
+
+go 1.21.0
+
+require (
+	github.com/eh-steve/goloader/jit v0.0.0-20230731163325-b789213e8550
+	golang.org/x/text v0.12.0
+)
+
+require github.com/eh-steve/goloader v0.0.0-20230730231803-5c95d7a5f4e2 // indirect

go.sum

@@ -0,0 +1,6 @@
+github.com/eh-steve/goloader v0.0.0-20230730231803-5c95d7a5f4e2 h1:0mZ2Y8x4dhPfm9eOlbzBx31YSLaECdPvKEBrL5Hc0YE=
+github.com/eh-steve/goloader v0.0.0-20230730231803-5c95d7a5f4e2/go.mod h1:k7xs3CUwCvOU9aw851I6AEb6ZzZJ3nos5dZ6A/2ewM0=
+github.com/eh-steve/goloader/jit v0.0.0-20230731163325-b789213e8550 h1:clY7T47fFZdFcILcu7uksS7FStRaKMssCYGW0l/AoMo=
+github.com/eh-steve/goloader/jit v0.0.0-20230731163325-b789213e8550/go.mod h1:p18VKcPYO8oWGYcQt/K5EGIGqak0ZT5HwVirGpUGZBg=
+golang.org/x/text v0.12.0 h1:k+n5B8goJNdU7hSvEtMUz3d1Q6D/XW4COJSJR6fN0mc=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=

pkg/utils/main.go

@@ -0,0 +1,69 @@
+package utils
+
+import (
+	"log"
+	"os"
+
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
+)
+
+func Byte2String(arr []int8) string {
+	b := make([]byte, len(arr))
+	for i, v := range arr {
+		b[i] = byte(v)
+	}
+	return string(b)
+}
+
+func Byte2MiB(b uint64) float64 {
+	return float64(float64(b) / (1024 * 1024))
+}
+
+func Byte2GiB(b uint64) float64 {
+	return float64(float64(b) / (1024 * 1024 * 1024))
+}
+
+func MB2GiB(b uint64) float64 {
+	return float64(float64(b*1000*1000) / (1024 * 1024 * 1024))
+}
+
+func CheckPath(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func CreatePath(path string) {
+	if flag, err := CheckPath(path); flag {
+		if err != nil {
+			log.Fatal(err)
+		}
+	} else if err := os.Mkdir(path, os.ModePerm); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func Check(err error) {
+	if err != nil {
+		panic(err)
+	}
+}
+
+func OpenLogFile(path string) *os.File {
+	f, err := os.OpenFile(path, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
+	if err != nil {
+		panic(err)
+	}
+	return f
+}
+
+// Makes first character uppercase of given English string
+func FirstUpperEN(str string) string {
+	return cases.Title(language.English).String(str)
+} // TODO cases.NoLower vs cases.Compact !

plugins/tmptest/info.go

@@ -0,0 +1,11 @@
+package mypackage
+
+func Info() map[string]interface{} {
+	return map[string]interface{}{
+		"name":        "tmptest",
+		"version":     "1.0.2",
+		"support":     "any",
+		"description": "Temporary testing",
+		"developer":   "asandikci@aliberksandikci.com.tr",
+	}
+}

plugins/tmptest/main.go

@@ -0,0 +1,9 @@
+package mypackage
+
+import "encoding/json"
+
+func MyFunc(input []byte) (interface{}, error) {
+	var output interface{}
+	err := json.Unmarshal(input, &output)
+	return output, err
+}