feat: reuse pipe if pipe already exists, but lockfile doesn't

daemon/src/receive.c

@@ -39,9 +39,13 @@ int receive_init(receive_t* receive) {
         return -1;
     }
 
+    /* create the fifo file or reuses the existing one, if existing */
     if (mkfifo(DAEMON_PIPE_NAME, 0666) != 0) {
+        struct stat file_stat;
+        if (stat(DAEMON_PIPE_NAME, &file_stat) < 0 || !S_ISFIFO(file_stat.st_mode)) {
             return -1;
         }
+    }
 
     return 0;
 }