Add support for downloading a backup

router/router_download.go

@@ -1 +1,45 @@
 package router
+
+import (
+	"bufio"
+	"github.com/gin-gonic/gin"
+	"github.com/pterodactyl/wings/router/tokens"
+	"net/http"
+	"os"
+	"strconv"
+)
+
+func getDownloadBackup(c *gin.Context) {
+	token := tokens.BackupPayload{}
+	if err := tokens.ParseToken([]byte(c.Query("token")), &token); err != nil {
+		TrackedError(err).AbortWithServerError(c)
+		return
+	}
+
+	s := GetServer(token.ServerUuid)
+	if s == nil || !token.IsUniqueRequest() {
+		c.AbortWithStatusJSON(http.StatusNotFound, gin.H{
+			"error": "The requested resource was not found on this server.",
+		})
+		return
+	}
+
+	p, st, err := s.LocateBackup(token.BackupUuid)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+
+	f, err := os.Open(p)
+	if err != nil {
+		TrackedServerError(err, s).AbortWithServerError(c)
+		return
+	}
+	defer f.Close()
+
+	c.Header("Content-Length", strconv.Itoa(int(st.Size())))
+	c.Header("Content-Disposition", "attachment; filename="+st.Name())
+	c.Header("Content-Type", "application/octet-stream")
+
+	bufio.NewReader(f).WriteTo(c.Writer)
+}