====== ABT Proxy ======

This is a systemd service started automatically on boot. It executes ''%%/init/abtproxy/abtproxy%%'', which in turn executes ''%%proxy_server%%'' (and restarts it on failure). In ''%%/init/abtproxy%%'' there are 4 JSON configuration files (''%%config.json  denylist.json  keys.json  labels.json%%''), a ''%%logs%%'' folder, and a SQLite 3 database ''%%proxyDB.db%%''.

===== SQLite Database =====
The database contains a single table ''%%OfflineTransactions%%'', which contains a single column ''%%TRANSACTION_DATA%%'' (of type ''%%TEXT%%''). There is a single row inside this table, which contains a JSON string like the following (partially redacted, as I'm not sure how much of this information is identifying):

  {
     "data" : {
        "barcode_data" : {
           "barcode_payload" : "http://weixin.qq.com/r/[REDACTED]",
           "barcode_timestamp" : ""
        },
        "device_identifier" : "[REDACTED]",
        "device_type" : "OBV",
        "media_identifier" : "[REDACTED]",
        "media_scheme" : "BYTEMARK",
        "media_type" : "ENCRYPTED_PAYLOAD",
        "result" : "valid",
        "timestamp" : "2024-11-16T20:54:00.708Z",
        "transit_data" : {
           "block_id" : "[REDACTED]",
           "location" : "",
           "operator_id" : "",
           "route" : "[REDACTED]",
           "vehicle_identifier" : "[REDACTED]"
        }
     }
  }