Fixed the #108 issue. (#154)

* Fixed the #108 issue.

* Added the array length check to the GetOSDetails function.

* Fixed typo

Author: IvanovOleg

telemetry/telemetry_linux.go

@@ -88,14 +88,21 @@ func (report *Report) GetSystemDetails() {
 
 // This function  creates a report with os details(ostype, version).
 func (report *Report) GetOSDetails() {
-	linesArr, err := ReadFileByLines("/etc/issue")
+	linesArr, err := ReadFileByLines("/etc/os-release")
 	if err != nil || len(linesArr) <= 0 {
 		report.OSDetails = &OSInfo{OSType: runtime.GOOS}
-		report.OSDetails.ErrorMessage = "reading /etc/issue failed with" + err.Error()
+		report.OSDetails.ErrorMessage = "reading /etc/os-release failed with" + err.Error()
 		return
 	}
 
-	osInfoArr := strings.Split(linesArr[0], " ")
+	osInfoArr := make(map[string]string)
+
+	for i := range linesArr {
+		s := strings.Split(linesArr[i], "=")
+		if len(s) == 2 {
+			osInfoArr[s[0]] = strings.TrimSuffix(s[1], "\n")
+		}
+	}
 
 	out, err := exec.Command("uname", "-r").Output()
 	if err != nil {
@@ -109,8 +116,8 @@ func (report *Report) GetOSDetails() {
 
 	report.OSDetails = &OSInfo{
 		OSType:         runtime.GOOS,
-		OSVersion:      osInfoArr[1],
+		OSVersion:      osInfoArr["VERSION"],
 		KernelVersion:  kernelVersion,
-		OSDistribution: osInfoArr[0],
+		OSDistribution: osInfoArr["ID"],
 	}
 }