Added an "Easter egg": the legacy castor version command line :)

cmdline/CMakeLists.txt

@@ -47,7 +47,11 @@ add_executable(cta-wfe-test EosCtaStub.cpp)
 target_link_libraries(cta-wfe-test cryptopp ctacommon XrdSsiPbEosCta XrdSsi-4 XrdSsiLib XrdUtils)
 set_property (TARGET cta-wfe-test APPEND PROPERTY INSTALL_RPATH ${PROTOBUF3_RPATH})
 
+# Easter egg: the castor version tool
+add_executable(castor castor.c)
+
 install(TARGETS cta-admin DESTINATION usr/bin)
 install(TARGETS cta-wfe-test DESTINATION usr/bin)
 install(FILES cta-cli.conf DESTINATION ${CMAKE_INSTALL_SYSCONFDIR}/cta)
+install(TARGETS castor DESTINATION usr/bin)
 

cmdline/castor.c

+/*!
+ * @project        The CERN Tape Archive (CTA)
+ * @brief          Command-line tool for CTA Admin commands
+ * @description    CTA Admin command using Google Protocol Buffers and XRootD SSI transport
+ * @copyright      Copyright 2017 CERN
+ * @license        This program is free software: you can redistribute it and/or modify
+ *                 it under the terms of the GNU General Public License as published by
+ *                 the Free Software Foundation, either version 3 of the License, or
+ *                 (at your option) any later version.
+ *
+ *                 This program is distributed in the hope that it will be useful,
+ *                 but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *                 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *                 GNU General Public License for more details.
+ *
+ *                 You should have received a copy of the GNU General Public License
+ *                 along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* This is an "Easter egg": the former castor version tool */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "version.h"
+
+int main(int argc, char ** argv) {
+  int c;
+
+  while ((c = getopt (argc, argv, "hv")) != EOF) {
+    switch (c) {
+    case 'v':
+      printf ("CASTOR 3.0 - CTA %s\n", CTA_VERSION);
+      break;
+    case 'h':
+    default:
+      printf ("usage : %s [-v] [-h]\n", argv[0]);
+      break;
+    }
+  }
+  exit (0);
+}