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Add-On Development Script for WebCTRL

WebCTRL is a trademark of Automated Logic Corporation. Any other trademarks mentioned herein are the property of their respective owners.

About

This script may be used to automate certain aspects of WebCTRL add-on development on Windows operating systems. WebCTRL SDK dependencies are automatically collected from a local WebCTRL installation. Other dependencies may be automatically downloaded from URLs. Commands are provided for add-on compilation and packaging. Keystore management is automatic, so you don't have to worry about manually signing your .addon file. Newly created projects are scaffolded by the script to contain all required files.

Setup Instructions

  1. Install WebCTRL8.5 or later.

  2. Install the most recent JDK release.

    • Download the .zip file, unpack it, and move the contents to your program files.
    • Set the JAVA_HOME environment variable to the JDK installation directory (e.g, C:\Program Files\Java\jdk-22.0.1).
  3. Install Visual Studio Code and the following extensions:

  4. Clone this repository to your local machine.

    • Edit LICENSE to match your specifications. This license file is copied to the new projects created by the script.
  5. Launch Utility.bat

    • You may be prompted to enter the location of the JDK bin if %JAVA_HOME% is not set.

    • If the script cannot locate a WebCTRL installation folder under %SystemDrive%, you will be prompted to specify an installation path.

    • You will be prompted to enter a keystore password and a few other parameters for creating a new keystore. Refer to Keystore Management for more details.

    • You will be prompted to enter a project folder for initialization.

      • It is recommended to use the naming convention lowercase-with-hyphens in accordance with common GitHub repository names.

      • Newly created project folders are placed alongside your local clone of this repository, but they can be moved anywhere after creation.

      • You may also enter the absolute path of a project folder. Any name which contains a colon is treated as an absolute path.

      • You can initialize preexisting project folders. For example, you could clone a remote repository to your local machine, and then initialize it with the script to generate missing files.

  6. Review documentation at ALCshare.

Command Reference

The following commands may be used to automate add-on compilation and packaging.

Command Description
help Displays a help message listing these commands with brief descriptions.
cls Clears the terminal.
depend [‑‑all] Attempts to collect missing dependencies. Recollects all dependencies if the --all flag is given.
init [‑‑new] Reinitializes the current project if no parameters are given. Prompts you to initialize a new project if the --new flag is given.
build [args] Compiles source code. The last modified timestamp for each .java file is recorded to avoid unnecessary recompilation. Arguments are passed to the javac compilation command. Arguments are stored for future invokation, so you only have to type them once. The default compilation flag is --release 11.
pack Packages all relevant files into a newly created .addon archive.
make [args] Calls build and pack. Arguments are passed to build.
sign Signs the .addon archive.
forge [args] Calls build, pack, and sign. Arguments are passed to build.
deploy Copies the .addon archive and authenticator certificate to the bound WebCTRL installation.
exec [args] Calls build, pack, sign, and deploy. Arguments are passed to build.
git [args] All Git commands are executed literally.

Extensions

Custom project-specific commands can be created to extend the functionality of this script. Any batch file placed in ./ext is treated as an extension. The name of each batch file is used as the command name (case-insensitive). It is expected that each extension prints help information to the terminal when passed the --help parameter. Help information is appended to the help menu shown in the terminal.

The default commands shown in the previous section can be overridden by extensions. For instance, https://github.com/automatic-controls/commissioning-scripts/blob/main/ext/pack.bat overrides the default pack command. This example also shows how to invoke the overridden packing command (akin to the super keyword in Java). For an improved deploy command, see https://github.com/automatic-controls/addon-dev-refresh.

An optional script, ./startup.bat, is invoked whenever a project folder is loaded. This may be used for any additional setup required for project files after cloning a remote repository to your local device.

Generated Project Structure

File Description
./.vscode/settings.json Tells Visual Studio Code where dependencies are located.
./.gitignore Tells Git what to ignore when committing files.
./Utility.bat Script to automate builds.
./README.md User-friendly information about the project.
./LICENSE License file for the project.
./config Contains various configuration files for this script.
./config/BUILD_DETAILS Record basic information about the latest build.
./config/COMPILE_FLAGS Specifies additional compilation flags.
./config/EXTERNAL_DEPS File specifying external dependencies for automatic collection.
./config/RUNTIME_DEPS File specifying runtime dependencies for automatic collection.
./src Contains all source code.
./classes Contains and indexes compiled .class files.
./classes/index.txt Records last modified timestamps for source code to avoid unnecessary recompilation.
./root Root directory packaged into the .addon archive.
./root/info.xml Contains basic information about the add-on.
./root/webapp Static resources (e.g, files and folders including html, css, js, jsp, and png).
./root/webapp/WEB-INF/web.xml Deployment descriptor (e.g, servlet, filter, and listener mappings).
./root/webapp/WEB-INF/classes Contains compiled .class files.
./root/webapp/WEB-INF/lib Contains dependencies not provided by WebCTRL at runtime.
./lib Contains project-specific dependencies provided by WebCTRL at runtime.
./ext Contains extensions that provide additional commands.
./startup.bat Batch script which is executed whenever the project folder is loaded.

Manual Deployment

  1. Place the authentication certificate (look for a file with the .cer extension in your local clone of this repository) into the ./addons directory of the target WebCTRL installation.

  2. Use the WebCTRL interface to install the .addon archive of your project.

Dependencies

Runtime dependencies are located in ./lib relative to your local clone of this repository. These dependencies do not need to be packaged into your .addon file because they are provided by WebCTRL at runtime. Other external dependencies should be placed in ./root/webapp/WEB-INF/lib relative to your project folder. The following runtime dependencies are collected from your WebCTRL installation:

Dependency Location Relative to WebCTRL9.0
tomcat-embed-core ./webserver/lib
addonsupport-api-addon ./modules/addonsupport
alarmmanager-api-addon ./modules/alarmmanager
bacnet-api-addon ./bin/lib
directaccess-api-addon ./modules/directaccess
webaccess-api-addon ./modules/webaccess
xdatabase-api-addon ./modules/xdatabase

Feel free to browse your WebCTRL installation for dependencies that give access to other internal APIs if these defaults are insufficient. If you would like to add a WebCTRL API to one project folder without affecting any other projects, the .jar file should be placed in ./lib relative to your project folder.

VSCode can provide additional features like hover-text documentation for dependencies when source jars are available. Each source jar (name-sources.jar) should be placed alongside the corresponding binary jar (name.jar). Source jars are ignored when packing the .addon archive in an attempt to minimize file size.

Automated Collection

There are three files which define automatic dependency collection. The first is ./DEPENDENCIES relative to your local clone of this repository. This file defines global runtime dependencies used by every project (e.g, the WebCTRL SDK). The other two files are ./config/EXTERNAL_DEPS and ./config/RUNTIME_DEPS relative to each project folder (click the links for an example).

Dependencies specified by EXTERNAL_DEPS are placed in ./root/webapp/WEB-INF/lib. Dependencies specified by RUNTIME_DEPS are placed in ./lib. Dependency collection automatically occurs whenever a project folder is loaded, or it can be manually triggered with the depend command.

Each dependency list adheres to the same file format. Two schemes currently exist for collecting dependencies. The file scheme searches for a dependency located in your WebCTRL installation. The url scheme downloads a dependency from a website (using curl). See the example:

url:janino:https://repo1.maven.org/maven2/org/codehaus/janino/janino/3.1.7/janino-3.1.7-sources.jar
url:commons-compiler:https://repo1.maven.org/maven2/org/codehaus/janino/commons-compiler/3.1.7/commons-compiler-3.1.7-sources.jar
file:spring-context:bin\lib
file:javax.activation:bin\lib
file:core-api:modules\core
url:CommissioningScripts-0.1.1.jar:https://github.com/automatic-controls/commissioning-scripts/releases/download/v0.1.1-beta/CommissioningScripts-0.1.1.jar
url:CommissioningScripts-0.1.1-sources.jar:https://github.com/automatic-controls/commissioning-scripts/releases/download/v0.1.1-beta/CommissioningScripts-0.1.1-sources.jar

The general format is scheme:identifier:location. For files, the location is a relative path to the folder in your WebCTRL installation which contains the dependency. For urls, the location is a direct download link. The identifier should be the first part of the dependency's filename (excluding the version). Dependency filenames are generally expected to match the regular expression ^identifier-\d.*\.jar$. Alternatively, the identifier may be an exact match to the filename (including the .jar extension).

Keystore Management

The generated 2048-bit RSA key-pair is valid for 100 years, uses SHA512 as the signature algorithm, and is stored under the alias addon_dev in ./keystore.jks. You can also use a preexisting key-pair under the same alias. An obfuscation of the keystore password is stored in ./config.txt. The obfuscation algorithm reverses the ordering and XORs each character code with 4. THE KEYSTORE PASSWORD IS NOT ENCRYPTED; IT IS ONLY OBFUSCATED.

Remark: WebCTRL uses the same obfuscation algorithm in a few places I've found. Anyone can inspect the JavaScript in a WebCTRL login page to discover that operator passwords are obfuscated in this way before being sent to the server (of course, this is not a substitute for encrypting traffic with HTTPS). The webserver.keystorepassword entry from ./resources/properties/settings.properties (relative to WebCTRL) is also obfuscated using the same algorithm.

Compatibility Notes

WebCTRL may complain if your add-on name includes spaces. You may use the build flag --release 11 for WebCTRL8.0 and --release 8 for WebCTRL7.0. These flags indicate the JVM version to use for compilation. You can determine the appropriate JVM version by invoking "[WebCTRL]\bin\java\jre\bin\java.exe" -version from command prompt (after replacing [WebCTRL] with the path to your WebCTRL installation directory).

WebCTRL JVM
7.0 8
8.0 11
8.5 11
9.0 17

Known Issues

Recursive Dependency Collection

Recursive dependency collection from Maven repositories is not supported. POM files are commonly used by other compilation scripts for such purposes. For this development tool, you must manually specify the URL to download each required dependency individually.

Lazy Inline Constants

The Java compiler inlines certain constants. This optimization has the potential to cause problems given that this build script only compiles source code files when it detects changes to the last-modified timestamp. For example, suppose Constants.java has the following contents.

public class Constants {
   public final static String VERSION = "1.0.0";
}

Suppose another class, Main.java, contains a reference to Constants.VERSION. When Main.java is compiled into Main.class, the version constant is inlined. Since the constant is evaluated at compilation instead of runtime, Main.class will not detect changes to Constants.VERSION as one would expect when Constants.java is recompiled. In order for changes to inlined constants to fully propagate, all classes which reference the constants must also be recompiled.

Therefore, it is recommended to delete the ./classes directory and recompile everything after altering inlined constants.