Beta Draft: 2016-04-19
Reference Platform Release Notes (Intel Galileo Gen2)
Release 8.3 Developer Preview
It contains the following sections:
The Oracle Java ME Embedded release 8.3 software for the Intel Galileo Gen2 platform is a ready-to-run binary for use with an Intel Galileo Gen2 board. See the Usage Notes for more details.
The Oracle Java ME Embedded software uses an optimized platform stack for small embedded devices, which includes the Connected Limited Device Configuration (CLDC) HotSpot Implementation (Java Virtual Machine) version 8, the Micro Edition Embedded Profile (MEEP) application environment, the Generic Connection Framework (GCF) API, and enhanced support for various Java Specification Requests (JSRs).
The following features are included in the Oracle Java ME Embedded software on the Intel Galileo Gen2 platform:
OS Yocto Linux v2.1
CLDC 8 (JSR 360)
Full API set including MVM support
General Connection Framework (GCF) 8
File protocol (file: scheme)
Datagram (datagram: scheme)
TCP/IP client socket (socket: scheme)
TCP/IP server socket (socket: scheme)
Secure client socket (ssl: scheme)
HTTP (http: scheme)
HTTPS (https: scheme)
Secure datagram (dtls: scheme)
Secure server socket (ssl: scheme)
javax.microedition.pki package and other security-related enhancements
TLS v1, v1.1, v1.2
Java ME Embedded Profile (MEEP) 8:
javax.microedition.io (IMC, PushRegistry)
Device I/O APIs, which provide enhanced device controls and improved input/output (I/O) for small embedded devices:
General-purpose input/output (GPIO)
Inter-Integrated Circuit (I2C)
Serial Peripheral Interface (SPI)
Universal Asynchronous Receiver/Transmitter (UART)
Ongoing support for the following optional packages:
JSR 172 - Web Services
JSR 177 - Security and Trust Services API (SATSA-CRYPTO package only)
JSR 280 - XML API for Java ME
Command-line interface (CLI)
File system commands
Memory monitoring is fully supported in this release and provides:
Contents of the Java heap
A call context for each object at its creation
CPU profiling is fully enabled in this release and provides:
A way to identify bottlenecks in applications
The following data for each method: an execution duration, exact number of calls, and a method context
Network monitoring support
The Oracle Java ME Embedded software for the reference board platform includes an CLDC implementation with a high-performance Java Virtual Machine that can run IMlets and access input/output ports. This runtime is optimized for the reference board platform.
Getting Started Guidefor the Reference Platform (Intel Galileo Gen2) describes how to install the Yocto Linux operating system and Oracle Java ME Embedded 8.3 distribution on the SD card, how to connect to the board from the development host computer, and how to install, run, and debug IMlets on the board.
Note the following important information before running the Oracle Java ME Embedded software on the Intel Galileo Gen2 board:
This release does not support running multiple instances of its executable; avoid simultaneously starting several instances of any of scripts or executable files, regardless of whether these are from the same installation of the software or from different installations. The software can run multiple IMlets in the same instance of a virtual machine; you do not need to start multiple VMs to run several applications at a time. Not following this precaution can result in malfunctions with uninformative error messages and might cause corruption of the installation files.
No generic device is implemented, as would be accessed using the package
Access points are one-to-one mapped to network interfaces. However, the access point management functionality is implemented with a limitation which does not allow to change the state of the Linux network interface from Java. The state can only be read. The proxy setting is also available through an environment variable.
The Oracle Java ME Embedded release 8.3 software installation requires an execution model that ensures certain networked resources available. These required resources might include, but are not limited to, a variety of communication capabilities between the product's installed components.
It is important to note that the product's installation and runtime system is fundamentally a developer system that is not specifically designed to guard against malicious attacks from outside intruders. Given this, the product's architecture can present an insecure operating environment to the installation file system and its runtime environment, during execution. For this reason, it is critically important to observe the precautions outlined in the following security guidelines when installing and running the software.
The security-related functionality of a final developed application for release into the field is supported by the available components of the Oracle Java ME Embedded software stack incorporated by the developer into the application. The security precautions required by applications in the field are beyond the scope of these recommendations, but must be observed by the application developer.
To maintain optimum network security, the software package can be installed and run in a closed network operating environment; the software system that is not connected directly to the Internet or to a company intranet environment that could introduce unwanted exposure to malicious intrusion. This is the ideal secure operating environment whenever the application under development does not require an Internet connection.
When the application under development requires an Internet connection, you must conform to the guidelines highlighted in Protecting Operating Environment From Malicious Intrusion.
If the operating environment is open to network access, you must observe the following precautions to protect valuable resources from malicious intrusion:
Locate the development environment behind a secure firewall that strictly limits unauthorized network access to its file system and services. Limit access privileges to those that are required for development while allowing all the bidirectional local network communications that are necessary for the application's functionality. The firewall configuration must support these requirements to run the software while also addressing them from a security standpoint.
Follow the principle of least privilege by assigning the minimum set of system access permissions required for installation and execution of the software.
Do not store any sensitive information on the same file system that hosts the installation.
Ensure that the operating system patches are up-to-date on host machines in the development environment.
The Oracle Java ME Embedded software distribution bundle contains security certificates that are needed for testing during development of products for final release to customers. Some of these certificates are self-signed security certificates generated by Oracle that are mapped to privileged security domains. IMlets or MIDlets signed by these certificates get high privileges to access restricted APIs; these certificates present a security vulnerability if they are released to end users on a customer's device. Other certificates issued by universally recognized certificate authorities (CAs) are used only for signature verification and they do not present a vulnerability.
After final testing of the product is completed and the product is being prepared for release to end users, you must remove self-signed security certificates that present a security vulnerability.
The CLI is incorporated in the Developer Agent, which communicates with a device through an unsecured protocol. The Developer Agent is a Java SE application that can be reverse engineered to tamper with or to get information about the communication protocol, which might be used by an untrusted entity to manipulate the device. If you decide to implement the Developer Agent in a product deployment, it is your responsibility to incorporate adequate security measures around the Developer Agent communication channel. This channel uses TCP port 2201 on the Raspberry Pi device for the communication.
For generic bugs in this release of the Oracle Java ME SDK that might affect the Intel Galileo Gen2 platform, see Oracle Java ME Software Development Kit Release Notes.
At the time of release no bugs are found in the Oracle Java ME Embedded 8.3 software for the Reference Platform (Intel Galileo Gen2).
The following documentation is included with this release of the Oracle Java ME Embedded software. See
All (this document)
Reference Platform Release Notes (Intel Galileo Gen2)
Demonstrates how to install, run, and troubleshoot the Oracle Java ME Embedded software on the Raspberry Pi platform.
Getting Started Guide for the Reference Platform (Intel Galileo Gen2)
Oracle® Java ME Embedded Reference Platform Release Notes (Intel Galileo Gen2), Release 8.3 Developer Preview
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