Merge pull request #22 from steffenfritz/checkversion

Closing #21

Author: steffenfritz

Makefile

@@ -1,7 +1,7 @@
 ROOT_DIR:=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 
 BINARY=mxcheck
-VERSION=1.5.1
+VERSION=v1.5.2
 
 BUILD=`git rev-parse --short HEAD`
 PLATFORMS=darwin linux windows

README.md

@@ -22,13 +22,14 @@ You can set mailFrom, mailTo, the DNS server, DKIM selector and output a report
     -s, --service string     The service host to check (mandatory flag)
     -S, --dkim-selector      The DKIM selector. If set a dkim check is performed on the provided service domain
     -v, --version            Version and license
+    -u, --updatecheck        Check if a new version of mxcheck is available
     -w, --write-tsv          Write tsv formated report to file
 
 
 
 # Version
 
-v1.5.1
+v1.5.2
 
 [![Go Report Card](https://goreportcard.com/badge/github.com/steffenfritz/mxcheck)](https://goreportcard.com/report/github.com/steffenfritz/mxcheck) 
 [![Go Reference](https://pkg.go.dev/badge/github.com/steffenfritz/mxcheck.svg)](https://pkg.go.dev/github.com/steffenfritz/mxcheck)

checkversion.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+type MXCVersion struct {
+	Tag_name string
+}
+
+func getLatestVersion() {
+	url := "https://api.github.com/repos/steffenfritz/mxcheck/releases/latest"
+	resp, err := http.Get(url)
+	if err != nil {
+		InfoLogger.Fatalln(err)
+	}
+
+	var mxcv MXCVersion
+	jsondec := json.NewDecoder(resp.Body)
+	err = jsondec.Decode(&mxcv)
+	if err != nil {
+		InfoLogger.Fatalln(err)
+	}
+
+	if mxcv.Tag_name == Version {
+		InfoLogger.Println("You have the most recent version installed. Version: " + Version)
+	} else {
+		InfoLogger.Println("A newer version is available.")
+		InfoLogger.Println("Installed version: " + Version)
+		InfoLogger.Println("Available version: " + mxcv.Tag_name)
+	}
+}

main.go

@@ -77,6 +77,7 @@ func main() {
 	noprompt := flag.BoolP("no-prompt", "n", false, "Answer yes to all questions")
 	targetHostName := flag.StringP("service", "s", "",
 		"The service host to check")
+	updatecheck := flag.BoolP("updatecheck", "u", false, "Check for new version of mxcheck")
 	version := flag.BoolP("version", "v", false, "Version and license")
 	writetsv := flag.BoolP("write-tsv", "w", false, "Write tsv formated report to file")
 
@@ -87,6 +88,11 @@ func main() {
 		return
 	}
 
+	if *updatecheck {
+		getLatestVersion()
+		return
+	}
+
 	if len(*targetHostName) == 0 {
 		ErrorLogger.Println("The service flag is mandatory.")
 		return

mxcheck.1

@@ -22,7 +22,8 @@
 .\" %%%LICENSE_END
 
 
-.TH mxcheck 1 "May 2023" "version 1.5.1"
+.TH mxcheck 1 "June 2023" "version 1.5.2"
+
 
 .SH NAME
 mxcheck
@@ -58,6 +59,9 @@ mxcheck
 .BR \-t,\ --mailto\fR
     Set the mailTo address (default "[email protected]").
 
+.BR \-u,\ --updatecheck\fR
+    Check if a new version of mxcheck is available.
+
 .BR \-v,\ --version\fR
     Print the version and build and a license notice.