added --version for git releases

software/Makefile

@@ -1,6 +1,15 @@
+GIT_VERSION := $(shell git --no-pager describe --tags --always)
+GIT_COMMIT  := $(shell git rev-parse --verify HEAD)
+GIT_DATE    := $(firstword $(shell git --no-pager show --date=iso-strict --format="%ad" --name-only))
+BUILD_DATE  := $(shell date --iso=seconds)
+
 PREFIX = $(DESTDIR)/usr/local
 
-CFLAGS = -Wall -Wextra -Werror -std=c99 -O3 -I Keccak -I /usr/include/libftdi1
+CFLAGS = -Wall -Wextra -Werror -std=c99 -O3 -I Keccak -I /usr/include/libftdi1 \
+ -DGIT_VERSION=\"$(GIT_VERSION)\"\
+ -DGIT_COMMIT=\"$(GIT_COMMIT)\"\
+ -DGIT_DATE=\"$(GIT_DATE)\"\
+ -DBUILD_DATE=\"$(BUILD_DATE)\"
 
 FOUND = $(shell ldconfig -p | grep --silent libftdi.so && echo found)
 ifeq ($(FOUND), found)

software/infnoise.c

@@ -299,6 +299,8 @@ int main(int argc, char **argv)
             opts.daemon = true;
         } else if(!strcmp(argv[xArg], "--list-devices")) {
             opts.listDevices = true;
+        } else if(!strcmp(argv[xArg], "--version")) {
+            opts.version = true;
         } else if(!strcmp(argv[xArg], "--help") || !strcmp(argv[xArg], "-h")) {
             opts.help = true;
         } else {
@@ -320,6 +322,7 @@ int main(int argc, char **argv)
                             "    --daemon - run in the background\n"
                             "    --serial <serial> - use specified device\n"
                             "    --list-devices - list available devices\n"
+                            "    --version - show version information\n"
                             "    --help - this help output\n", stdout);
 	if (opts.none) {
             return 1;
@@ -360,6 +363,14 @@ int main(int argc, char **argv)
         opts.outputMultiplier = 2u; // Don't throw away entropy when writing to /dev/random unless told to do so
     }
 
+    if (opts.version) {
+	printf("GIT VERSION - %s\n", GIT_VERSION);
+	printf("GIT COMMIT  - %s\n", GIT_COMMIT);
+	printf("GIT DATE    - %s\n", GIT_DATE);
+	printf("BUILD DATE  - %s\n", BUILD_DATE);
+	return 0;
+    }
+
     if (opts.listDevices) {
 	listUSBDevices(&ftdic);
 	return 0;

software/infnoise.h

@@ -41,6 +41,7 @@ struct opt_struct {
 	bool help;		// Show help
 	bool none;		// set to true when no valid arguments where detected
 	bool raw;		// No whitening?
+	bool version;		// Show version
 	char *pidFileName;	// Name of optional PID-file
 	char *serial;		// Name of selected device
 };