Read in block sizes, more undersandable and more boradly supported.

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @martinpaljak

build.gradle

@@ -2,12 +2,13 @@ plugins {
     id 'application'
     id 'org.openjfx.javafxplugin' version '0.0.14'
     id 'com.palantir.git-version' version '3.0.0' // for gitVersion()
+    id 'org.beryx.jlink' version '2.25.0'
  //    id 'com.gluonhq.client-gradle-plugin' version '0.1.42'
  //   id 'com.gluonhq.gluonfx-gradle-plugin' version '1.0.16'
 }
 
 group 'pro.javacard.nfc4pc'
-version '230707'
+version '230708-next'
 
 repositories {
     mavenLocal()
@@ -27,19 +28,26 @@ javafx {
     modules = ['javafx.controls', 'javafx.graphics', 'javafx.swing']
     //configuration = 'compileOnly'
 }
+
+jlink {
+    launcher {
+        name = 'nfc4pc'
+    }
+}
+
 //gluonClient {
 //    reflectionList = ["pro.javacard.nfc4pc.MainWrapper"]
 //}
 
 
 application {
-    mainClass = "$moduleName/pro.javacard.nfc4pc.MainWrapper"
     mainModule = "pro.javacard.nfc4pc"
+    mainClass = "pro.javacard.nfc4pc.MainWrapper"
 }
 
 jar {
     manifest {
-        attributes 'Main-Class': 'pro.javacard.nfc4pc.MainWrapper'
+        attributes 'Main-Class': application.mainClass
         attributes 'Implementation-Version': gitVersion()
     }
     from {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,10 +80,10 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
@@ -143,12 +143,16 @@ fi
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac

gradlew.bat

@@ -26,6 +26,7 @@ if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 

src/main/java/pro/javacard/nfc4pc/CLIOptions.java

@@ -61,6 +61,15 @@ protected static OptionSet parseArguments(String[] argv) throws IOException {
         }
 
         if (args.has(OPT_VERSION)) {
+            if (args.has(OPT_DEBUG)) {
+                if (System.getProperty("os.name").equalsIgnoreCase("Mac OS X")) {
+                    ProcessBuilder pb = new ProcessBuilder(List.of("/usr/sbin/sysctl", "-n", "machdep.cpu.brand_string"));
+                    Process process = pb.start();
+                    String result = new String(process.getInputStream().readAllBytes()).trim();
+                    System.out.printf("# Running Java %s (%s) from %s on %s %s (%s)%n", System.getProperty("java.version"), System.getProperty("os.arch"), System.getProperty("java.vendor"), System.getProperty("os.name"), System.getProperty("os.version"), result);
+                } else
+                    System.out.printf("# Running Java %s (%s) from %s on %s %s%n", System.getProperty("java.version"), System.getProperty("os.arch"), System.getProperty("java.vendor"), System.getProperty("os.name"), System.getProperty("os.version"));
+            }
             System.out.println("NFC4PC version " + CLIOptions.class.getPackage().getImplementationVersion());
             System.exit(0);
         }

src/main/java/pro/javacard/nfc4pc/NDEF.java

@@ -35,33 +35,31 @@ static boolean isNull(byte[] b) {
         return true;
     }
 
-    // Returns the NDEF message
+    // Returns the NDEF message, if any
     static Optional<byte[]> getType2(APDUBIBO b) throws BIBOException {
         try {
-            // Read initial block
-            ResponseAPDU initial = b.transmit(new CommandAPDU(0xFF, 0xB0, 0x00, 3, 0x10));
-            if (initial.getSW() == 0x9000 && initial.getData().length == 0x10) {
+            // Read capability container
+            ResponseAPDU initial = b.transmit(new CommandAPDU(0xFF, 0xB0, 0x00, 3, 0x04));
+            if (initial.getSW() == 0x9000 && initial.getData().length == 4) {
                 var init = initial.getData();
-                log.debug("Initial read (blocks 3, 4, 5, 6): {}", HexUtils.bin2hex(init));
+                log.debug("Capability container: {}", HexUtils.bin2hex(init));
                 if (init[0] == (byte) 0xE1 && init[1] == 0x10) {
                     int total = (init[2] & 0xFF) * 8;
                     log.info("NDEF payload of {} bytes", total);
-                    int toRead = total - init.length - 4; // So that we don't read the OTP?
                     ByteArrayOutputStream payload = new ByteArrayOutputStream();
-                    payload.write(Arrays.copyOfRange(init, 4, init.length));
-                    for (int i = 7; (i - 3) * 4 < total; i += 4) {
-                        log.debug("Reading from block {} to {}, bytes {} to {}", i, i + 3, (i - 3) * 4, (i - 3) * 4 + 16);
+                    for (int i = 4; i * 4 < total; i++) {
+                        log.debug("Reading block {}", i);
                         log.debug("Current payload: ({} bytes) {}", payload.toByteArray().length, HexUtils.bin2hex(payload.toByteArray()));
 
-                        var block = b.transmit(new CommandAPDU(0xFF, 0xB0, 0x00, i, 0x10));
-                        var uid_bytes = block.getData();
+                        var block = b.transmit(new CommandAPDU(0xFF, 0xB0, 0x00, i, 4));
+                        var bytes = block.getData();
                         if (block.getSW() == 0x9000) {
-                            log.debug("Block: {}", HexUtils.bin2hex(uid_bytes));
-                            if (isNull(uid_bytes)) {
+                            log.debug("Block: {}", HexUtils.bin2hex(bytes));
+                            if (isNull(bytes)) {
                                 log.debug("Empty block, not reading more");
                                 break;
                             }
-                            payload.write(uid_bytes);
+                            payload.write(bytes);
                         } else {
                             log.warn("Read returned {}", HexUtils.bin2hex(block.getBytes()));
                             return Optional.empty();