working jpackage build

build.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+if [ -z "${JAVA_HOME}" ]; then
+    echo "JAVA_HOME needs to point to Java 14+"
+    exit 1
+fi
+
+echo "cleaning"
+rm -f *.jar
+rm -rf build
+rm -f *.exe
+rm -f *.dmg
+
+
+RES_DIR=../i2p.i2p/installer/resources
+I2P_JARS=../i2p.i2p/pkg-temp/lib
+HERE=$PWD
+
+echo "preparing resources.csv"
+mkdir build
+cd $RES_DIR
+find certificates -name *.crt -exec echo '{},{}' >> $HERE/build/resources.csv \;
+cd $HERE
+echo "geoip/GeoLite2-Country.mmdb,geoip/GeoLite2-Country.mmdb" >> build/resources.csv
+
+echo "copying certificates"
+cp -R $RES_DIR/certificates build/
+
+echo "copying GeoIP"
+mkdir build/geoip
+cp $RES_DIR/GeoLite2-Country.mmdb.gz build/geoip
+gunzip build/geoip/GeoLite2-Country.mmdb.gz
+
+echo "compiling custom launcher"
+cp $I2P_JARS/{i2p,router}.jar build
+cd java
+$JAVA_HOME/bin/javac -d ../build -classpath ../build/i2p.jar:../build/router.jar net/i2p/router/PackageLauncher.java
+cd ..
+
+echo "building launcher.jar"
+#cp -R java/net build
+cd build
+$JAVA_HOME/bin/jar -cf launcher.jar net certificates geoip resources.csv
+cd ..
+
+echo "preparing to invoke jpackage"
+cp $I2P_JARS/*.jar build
+$JAVA_HOME/bin/jpackage --name I2P --input build --main-jar launcher.jar --main-class net.i2p.router.PackageLaunch

java/net/i2p/router/PackageLauncher.java

@@ -0,0 +1,82 @@
+package net.i2p.router;
+
+import net.i2p.util.SystemVersion;
+
+import java.io.*;
+import java.nio.file.*;
+
+public class PackageLauncher {
+    public static void main(String[]args) throws Exception {
+        if (!(SystemVersion.isWindows() || SystemVersion.isMac())) {
+            System.err.println("This launcher will work only on Windows or Mac");
+            System.exit(1);
+        }
+
+        // 1. Select home directory
+        File home = selectHome();
+        if (!home.exists())
+            home.mkdirs();
+        else if (!home.isDirectory()) {
+            System.err.println(home + " exists but is not a directory.  Please get it out of the way");
+            System.exit(1);
+        }
+
+        // 2. Deploy resources
+        var resourcesList = PackageLauncher.class.getClassLoader().getResourceAsStream("resources.csv");
+        var reader = new BufferedReader(new InputStreamReader(resourcesList));
+
+        String line;
+        while((line = reader.readLine()) != null) {
+            deployResource(home, line);
+        }
+
+        // 3. Set up environment vars
+        System.setProperty("i2p.dir.base", home.getAbsolutePath());
+        System.setProperty("i2p.dir.config", home.getAbsolutePath());
+        System.setProperty("geoip.dir", home.getAbsolutePath() + File.separator + "geoip");
+            // hmm what else?
+
+        // 4. Launch router
+        RouterLaunch.main(args);
+    }
+
+
+    private static File selectHome() throws Exception {
+        File home = new File(System.getProperty("user.home"));
+        File i2p;
+        if (SystemVersion.isMac()) {
+            File library = new File(home, "Library");
+            File appSupport = new File(library, "Application Support");
+            i2p = new File(appSupport, "I2P");
+        } else {
+            // windows
+            File appData = new File(home, "AppData");
+            File roaming = new File(appData, "Roaming");
+            i2p = new File(roaming, "I2P");
+        }
+        return i2p.getAbsoluteFile();
+    }
+
+    private static void deployResource(File home, String description) throws Exception {
+        String []split = description.split(",");
+        String url = split[0];
+        String target = split[1];
+
+        var resource = PackageLauncher.class.getClassLoader().getResourceAsStream(url);
+
+        File targetFile = home;
+        for (String element : target.split("/")) {
+            targetFile = new File(targetFile, element);
+        }
+
+        File targetDir = targetFile.getParentFile();
+        if (!targetDir.exists())
+            targetDir.mkdirs();
+        else if (!targetDir.isDirectory())
+            throw new Exception(targetDir + " exists but not a directory.  Please get it out of the way");
+
+        Files.copy(resource, targetFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
+    }
+}
+
+