FIX(client): Outdated copyright notice

The copyright end year displayed in the About dialog was hardcoded to
2020. This commit replaces the hardcoded version with a dynamic version
that uses the year the software was actually built as the end date.

Fixes #4784

3 files changed, 25 insertions, 2 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d09366fd..856d1eca1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -105,6 +105,9 @@ if(tests)
 endif()
 
 
+# Make the build year accessible as a macro
+add_compile_definitions(MUMBLE_BUILD_YEAR=${MUMBLE_BUILD_YEAR})
+
 add_subdirectory(src)
 
 if(g15 AND WIN32)
diff --git a/src/licenses.h b/src/licenses.h
index 505fe00a5..1087b89c8 100644
--- a/src/licenses.h
+++ b/src/licenses.h
@@ -18,7 +18,16 @@ struct ThirdPartyLicense {
 	bool isEmpty() const { return (name == 0 && url == 0 && license == 0); }
 };
 
-static const char *licenseMumble = "Copyright (C) 2005-2020 The Mumble Developers\n"
+#define DOQUOTE(arg) #arg
+#define QUOTE(arg) DOQUOTE(arg)
+
+#ifdef MUMBLE_BUILD_YEAR
+#	define COPYRIGHT_END QUOTE(MUMBLE_BUILD_YEAR)
+#else
+#	define COPYRIGHT_END "now"
+#endif
+
+static const char *licenseMumble = "Copyright (C) 2005-" COPYRIGHT_END " The Mumble Developers\n"
 								   "\n"
 								   "A list of The Mumble Developers can be found in the\n"
 								   "AUTHORS file at the root of the Mumble source tree\n"
diff --git a/src/mumble/About.cpp b/src/mumble/About.cpp
index 77d147598..5b11d4be3 100644
--- a/src/mumble/About.cpp
+++ b/src/mumble/About.cpp
@@ -16,6 +16,9 @@
 // (like protobuf 3.7 does). As such, for now, we have to make this our last include.
 #include "Global.h"
 
+#define DOQUOTE(arg) #arg
+#define QUOTE(arg) DOQUOTE(arg)
+
 AboutDialog::AboutDialog(QWidget *p) : QDialog(p) {
 	setWindowTitle(tr("About Mumble"));
 
@@ -55,13 +58,21 @@ AboutDialog::AboutDialog(QWidget *p) : QDialog(p) {
 	QLabel *text = new QLabel(about);
 	text->setTextInteractionFlags(Qt::TextBrowserInteraction);
 	text->setOpenExternalLinks(true);
+
+	QString copyrightText;
+#ifdef MUMBLE_BUILD_YEAR
+	copyrightText = "Copyright 2005-" QUOTE(MUMBLE_BUILD_YEAR) " The Mumble Developers";
+#else // MUMBLE_BUILD_YEAR
+	copyrightText = "Copyright 2005-now The Mumble Developers";
+#endif // MUMBLE_BUILD_YEAR
+
 	text->setText(tr("<h3>Mumble (%1)</h3>"
 					 "<p>%3</p>"
 					 "<p><b>A voice-chat utility for gamers</b></p>"
 					 "<p><tt><a href=\"%2\">%2</a></tt></p>")
 					  .arg(QLatin1String(MUMBLE_RELEASE))
 					  .arg(QLatin1String("https://www.mumble.info/"))
-					  .arg(QLatin1String("Copyright 2005-2020 The Mumble Developers")));
+					  .arg(copyrightText));
 	QHBoxLayout *qhbl = new QHBoxLayout(about);
 	qhbl->addWidget(icon);
 	qhbl->addWidget(text);