Add self-service photo and pronunciation upload with archiving and change log

tools/cookie/main.go

@@ -0,0 +1,27 @@
+// Command cookie prints a signed session cookie for local api testing.
+package main
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"time"
+)
+
+func main() {
+	email := flag.String("email", "", "session email address")
+	flag.Parse()
+	key := os.Getenv("SESSION_KEY")
+	if key == "" || *email == "" {
+		log.Fatal("[ERROR] SESSION_KEY and -email are required")
+	}
+	payload := fmt.Sprintf("%s|%d", *email, time.Now().Add(24*time.Hour).Unix())
+	mac := hmac.New(sha256.New, []byte(key))
+	mac.Write([]byte(payload))
+	fmt.Println(base64.RawURLEncoding.EncodeToString([]byte(payload)) + "." +
+		base64.RawURLEncoding.EncodeToString(mac.Sum(nil)))
+}