Add custom QZ Tray fork with pairing key authentication

- Custom fork of QZ Tray 2.2.x with certificate validation bypassed
- Implemented pairing key (HMAC) authentication as replacement
- Modified files: PrintSocketClient.java (certificate check disabled)
- New files: PairingAuth.java, PairingConfigDialog.java
- Excluded build artifacts (out/, lib/javafx*) from repository
- Library JARs included for dependency management

tray/ant/lib/slim-icu.py

@@ -0,0 +1,109 @@
+# 2018 Yohanes Nugroho <yohanes@gmail.com> (@yohanes)
+#
+# 1. Download icu4j source code, build using ant.
+#    It will generate icu4j.jar and icu4j-charset.jar
+#
+# 2. Run slim-icu.py to generate slim version.
+#
+#    To invoke from ant, add python to $PATH
+#    and add the following to build.xml:
+#
+#      <target name="distill-icu" depends="init">
+#          <exec executable="python">
+#              <arg line="ant/lib/slim-icu.py lib/charsets"/>
+#          </exec>
+#      </target>
+#
+#      ... then call: ant distill-icu
+#
+# 3. Overwrite files in lib/charsets/
+
+# slim ICU
+import sys
+import os
+from pathlib import Path
+import zipfile
+from zipfile import ZipFile
+
+directory = str(Path(__file__).resolve().parent)
+if len(sys.argv) > 1:
+    directory = sys.argv[1]
+
+mode = zipfile.ZIP_DEFLATED
+
+
+def keep_file(filename):
+    # skip all break iterators
+    if filename.endswith(".brk") \
+            or filename.endswith(".dict") \
+            or filename.endswith("unames.icu") \
+            or filename.endswith("ucadata.icu") \
+            or filename.endswith(".spp"):
+        return False
+
+    # keep english and arabic
+    if filename.startswith("en") \
+            or filename.startswith("ar") \
+            or not filename.endswith(".res"):
+        return True
+
+    return False
+
+
+zin = ZipFile(os.path.join(directory, 'icu4j.jar'), 'r')
+zout = ZipFile(os.path.join(directory, 'icu4j-slim.jar'), 'w', mode)
+
+for item in zin.infolist():
+    buff = zin.read(item.filename)
+    print(item.filename)
+
+    if keep_file(item.filename):
+        print("Keep")
+        zout.writestr(item, buff)
+    else:
+        print("Remove")
+
+zout.close()
+zin.close()
+
+
+def keep_charset_file(filename):
+    to_remove = [
+        "cns-11643-1992.cnv",
+        "ebcdic-xml-us.cnv",
+        "euc-jp-2007.cnv",
+        "euc-tw-2014.cnv",
+        "gb18030.cnv",
+        "ibm-1363_P11B-1998.cnv",
+        "ibm-1364_P110-2007.cnv",
+        "ibm-1371_P100-1999.cnv",
+        "ibm-1373_P100-2002.cnv",
+        "ibm-1375_P100-2008.cnv",
+        "ibm-1383_P110-1999.cnv",
+        "ibm-1386_P100-2001.cnv",
+        "ibm-1388_P103-2001.cnv",
+        "ibm-1390_P110-2003.cnv"
+    ]
+
+    for i in to_remove:
+        if i in filename:
+            return False
+
+    return True
+
+
+zin = ZipFile(os.path.join(directory, 'icu4j-charset.jar'), 'r')
+zout = ZipFile(os.path.join(directory, 'icu4j-charset-slim.jar'), 'w', mode)
+
+for item in zin.infolist():
+    buff = zin.read(item.filename)
+    print(item.filename, end=' ')
+
+    if keep_charset_file(item.filename):
+        print("Keep")
+        zout.writestr(item, buff)
+    else:
+        print("Remove")
+
+zout.close()
+zin.close()