fake_trx: unify the GPL license header

There is no need to manually put the license header as a variable
in each application in order to print it. Let's use a common one.

Change-Id: I1a6e8716a9069e7ade3ae15f2c04fd45d18e223c

src/target/fake_trx/burst_gen.py

@@ -22,6 +22,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import getopt
 import sys
@@ -32,13 +35,6 @@ from data_if import DATAInterface
 from gsm_shared import *
 from data_msg import *
 
-COPYRIGHT = \
-	"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class Application:
 	# Application variables
 	remote_addr = "127.0.0.1"
@@ -59,7 +55,7 @@ class Application:
 	pwr = None
 
 	def __init__(self):
-		self.print_copyright()
+		print_copyright(CR_HOLDERS)
 		self.parse_argv()
 		self.check_argv()
 
@@ -143,9 +139,6 @@ class Application:
 			if self.output_file is not None:
 				self.ddf.append_msg(msg)
 
-	def print_copyright(self):
-		print(COPYRIGHT)
-
 	def print_help(self, msg = None):
 		s  = " Usage: " + sys.argv[0] + " [options]\n\n" \
 			 " Some help...\n" \

src/target/fake_trx/burst_send.py

@@ -21,6 +21,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import getopt
 import sys
@@ -30,13 +33,6 @@ from data_if import DATAInterface
 from gsm_shared import *
 from data_msg import *
 
-COPYRIGHT = \
-	"Copyright (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class Application:
 	# Application variables
 	remote_addr = "127.0.0.1"
@@ -56,7 +52,7 @@ class Application:
 	pf_tn = None
 
 	def __init__(self):
-		self.print_copyright()
+		print_copyright(CR_HOLDERS)
 		self.parse_argv()
 
 		# Set up signal handlers
@@ -119,9 +115,6 @@ class Application:
 		# Burst passed ;)
 		return True
 
-	def print_copyright(self):
-		print(COPYRIGHT)
-
 	def print_help(self, msg = None):
 		s  = " Usage: " + sys.argv[0] + " [options]\n\n" \
 			 " Some help...\n" \

src/target/fake_trx/clck_gen.py

@@ -4,7 +4,7 @@
 # Virtual Um-interface (fake transceiver)
 # Simple TDMA frame clock generator
 #
-# (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>
+# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
 #
 # All Rights Reserved
 #
@@ -22,6 +22,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import time
 import sys
@@ -30,13 +33,6 @@ from threading import Timer
 from udp_link import UDPLink
 from gsm_shared import *
 
-COPYRIGHT = \
-	"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class CLCKGen:
 	# GSM TDMA definitions
 	SEC_DELAY_US = 1000 * 1000
@@ -99,12 +95,12 @@ class CLCKGen:
 # Just a wrapper for independent usage
 class Application:
 	def __init__(self):
+		# Print copyright
+		print_copyright(CR_HOLDERS)
+
 		# Set up signal handlers
 		signal.signal(signal.SIGINT, self.sig_handler)
 
-		# Print copyright
-		print(COPYRIGHT)
-
 	def run(self):
 		self.link = UDPLink("127.0.0.1", 5800, 5700)
 		self.clck = CLCKGen([self.link], ind_period = 51)

src/target/fake_trx/copyright.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+def print_copyright(holders = []):
+	# Print copyright holders if any
+	for date, author in holders:
+		print("Copyright (C) %s by %s" % (date, author))
+
+	# Print the license header itself
+	print("License GPLv2+: GNU GPL version 2 or later " \
+		"<http://gnu.org/licenses/gpl.html>\n" \
+		"This is free software: you are free to change and redistribute it.\n" \
+		"There is NO WARRANTY, to the extent permitted by law.\n")

src/target/fake_trx/ctrl_cmd.py

@@ -22,6 +22,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import getopt
 import select
@@ -29,13 +32,6 @@ import sys
 
 from udp_link import UDPLink
 
-COPYRIGHT = \
-	"Copyright (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class Application:
 	# Application variables
 	remote_addr = "127.0.0.1"
@@ -44,7 +40,7 @@ class Application:
 	fuzzing = False
 
 	def __init__(self):
-		print(COPYRIGHT)
+		print_copyright(CR_HOLDERS)
 		self.parse_argv()
 
 		# Set up signal handlers

src/target/fake_trx/fake_trx.py

@@ -4,7 +4,7 @@
 # Virtual Um-interface (fake transceiver)
 # OsmocomBB <-> OsmoBTS bridge
 #
-# (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>
+# (C) 2017-2018 by Vadim Yanitskiy <axilirator@gmail.com>
 #
 # All Rights Reserved
 #
@@ -22,6 +22,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2017-2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import getopt
 import select
@@ -35,13 +38,6 @@ from fake_pm import FakePM
 from udp_link import UDPLink
 from clck_gen import CLCKGen
 
-COPYRIGHT = \
-	"Copyright (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class Application:
 	# Application variables
 	bts_addr = "127.0.0.1"
@@ -56,7 +52,7 @@ class Application:
 	randomize_ul_rssi = False
 
 	def __init__(self):
-		self.print_copyright()
+		print_copyright(CR_HOLDERS)
 		self.parse_argv()
 
 		# Set up signal handlers
@@ -137,9 +133,6 @@ class Application:
 		# Stop clock generator
 		self.clck_gen.stop()
 
-	def print_copyright(self):
-		print(COPYRIGHT)
-
 	def print_help(self, msg = None):
 		s  = " Usage: " + sys.argv[0] + " [options]\n\n" \
 			 " Some help...\n" \

src/target/fake_trx/trx_sniff.py

@@ -21,6 +21,9 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+from copyright import print_copyright
+CR_HOLDERS = [("2018", "Vadim Yanitskiy <axilirator@gmail.com>")]
+
 import signal
 import getopt
 import sys
@@ -30,13 +33,6 @@ import scapy.all
 from data_dump import DATADumpFile
 from data_msg import *
 
-COPYRIGHT = \
-	"Copyright (C) 2018 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
-	"License GPLv2+: GNU GPL version 2 or later " \
-	"<http://gnu.org/licenses/gpl.html>\n" \
-	"This is free software: you are free to change and redistribute it.\n" \
-	"There is NO WARRANTY, to the extent permitted by law.\n"
-
 class Application:
 	# Application variables
 	sniff_interface = "lo"
@@ -67,7 +63,7 @@ class Application:
 	lo_trigger = False
 
 	def __init__(self):
-		print(COPYRIGHT)
+		print_copyright(CR_HOLDERS)
 		self.parse_argv()
 
 		# Open requested capture file