Add version string

Add `lib.Version` to get updated at build time.
Add --version flags to cashier and cashierd
Send client version in the signing request
Send server version in http response headers and in signing response
Set version at build time

1 files changed, 9 insertions, 1 deletions

diff --git a/cmd/cashierd/main.go b/cmd/cashierd/main.go
index 2e378bc..5b0b390 100644
--- a/cmd/cashierd/main.go
+++ b/cmd/cashierd/main.go
@@ -2,8 +2,11 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"log"
+	"os"
 
+	"github.com/nsheridan/cashier/lib"
 	"github.com/nsheridan/cashier/server"
 	"github.com/nsheridan/cashier/server/config"
 	"github.com/nsheridan/cashier/server/wkfs/vaultfs"
@@ -11,11 +14,16 @@ import (
 )
 
 var (
-	cfg = flag.String("config_file", "cashierd.conf", "Path to configuration file.")
+	cfg     = flag.String("config_file", "cashierd.conf", "Path to configuration file.")
+	version = flag.Bool("version", false, "Print version and exit")
 )
 
 func main() {
 	flag.Parse()
+	if *version {
+		fmt.Printf("%s\n", lib.Version)
+		os.Exit(0)
+	}
 	conf, err := config.ReadConfig(*cfg)
 	if err != nil {
 		log.Fatal(err)