fix: adjustment directory structure

proxy/util/logger_conf/conf.go

@@ -0,0 +1,63 @@
+package logger_conf
+
+import (
+	"log"
+	"os"
+	"strconv"
+)
+
+//var Free5gcLogDir string = path_util.Free5gcPath("free5gc/log") + "/"
+var Free5gcLogDir string = "/var/log/"
+//var LibLogDir string = Free5gcLogDir + "lib/"
+//var NfLogDir string = Free5gcLogDir + "nf/"
+
+var Free5gcLogFile string = Free5gcLogDir + "selfcareproxy.log"
+
+func init() {//InitLoggerConf(dir, filename string) {//init() {
+	//Free5gcLogDir = dir
+	//Free5gcLogFile = dir + filename
+
+	/*if err := os.MkdirAll(LibLogDir, 0775); err != nil {
+		log.Printf("Mkdir %s failed: %+v", LibLogDir, err)
+	}
+	if err := os.MkdirAll(NfLogDir, 0775); err != nil {
+		log.Printf("Mkdir %s failed: %+v", NfLogDir, err)
+	}*/
+
+	// Create log file or if it already exist, check if user can access it
+	f, fileOpenErr := os.OpenFile(Free5gcLogFile, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
+	if fileOpenErr != nil {
+		// user cannot access it.
+		log.Printf("Cannot Open %s\n", Free5gcLogFile)
+	} else {
+		// user can access it
+		if err := f.Close(); err != nil {
+			log.Printf("File %s cannot been closed\n", Free5gcLogFile)
+		}
+	}
+
+	sudoUID, errUID := strconv.Atoi(os.Getenv("SUDO_UID"))
+	sudoGID, errGID := strconv.Atoi(os.Getenv("SUDO_GID"))
+
+	if errUID == nil && errGID == nil {
+		// if using sudo to run the program, errUID will be nil and sudoUID will get the uid who run sudo
+		// else errUID will not be nil and sudoUID will be nil
+		// If user using sudo to run the program and create log file, log will own by root,
+		// here we change own to user so user can view and reuse the file
+		if err := os.Chown(Free5gcLogDir, sudoUID, sudoGID); err != nil {
+			log.Printf("Dir %s chown to %d:%d error: %v\n", Free5gcLogDir, sudoUID, sudoGID, err)
+		}
+		/*if err := os.Chown(LibLogDir, sudoUID, sudoGID); err != nil {
+			log.Printf("Dir %s chown to %d:%d error: %v\n", LibLogDir, sudoUID, sudoGID, err)
+		}
+		if err := os.Chown(NfLogDir, sudoUID, sudoGID); err != nil {
+			log.Printf("Dir %s chown to %d:%d error: %v\n", NfLogDir, sudoUID, sudoGID, err)
+		}*/
+
+		if fileOpenErr == nil {
+			if err := os.Chown(Free5gcLogFile, sudoUID, sudoGID); err != nil {
+				log.Printf("File %s chown to %d:%d error: %v\n", Free5gcLogFile, sudoUID, sudoGID, err)
+			}
+		}
+	}
+}