From e9f83a80414a92234dfe07baeae336ad8020fdde Mon Sep 17 00:00:00 2001
From: Adriaan de Groot <groot@kde.org>
Date: Fri, 23 Feb 2018 16:41:47 +0100
Subject: [PATCH] Add a -V flag, which prints the TLSPool version string.

The string is the same as the git version information,
so could be '0.20.local-20180223-163246'.

Fixes #44
---
 src/CMakeLists.txt | 1 +
 src/daemon.c       | 8 +++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 53511d8..7075bb2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -35,6 +35,7 @@ set(tlspool_SRC
 )
 
 add_executable(tlspool ${tlspool_SRC})
+target_compile_definitions(tlspool PRIVATE -DTLSPOOL_VERSION="${TLSPool_VERSION}")
 target_link_libraries(tlspool
     ${BDB_LIBRARY}
     ${GNUTLS_LIBRARY}
diff --git a/src/daemon.c b/src/daemon.c
index 6fd4692..2cfd4aa 100644
--- a/src/daemon.c
+++ b/src/daemon.c
@@ -14,6 +14,7 @@
 
 #include "manage.h"
 
+static const char version_string[] = TLSPOOL_VERSION;  /* defined as compile-time argument */
 
 void process_hangup (int hangupsignal) {
 	tlog (TLOG_DAEMON, LOG_NOTICE, "Received signal %d as a hangup request");
@@ -75,8 +76,13 @@ int main (int argc, char *argv []) {
 	 * Cmdline argument parsing
 	 */
 	while (parsing) {
-		int opt = getopt (argc, argv, "kc:");
+		int opt = getopt (argc, argv, "Vkc:");
 		switch (opt) {
+		case 'V':
+			fputs (version_string, stdout);
+			fputc ('\n', stdout);
+			exit (0);
+			break;
 		case 'k':
 			if (kill_competition) {
 				fprintf (stderr, "You can only flag kill-the-competition once\n");