ifpps: Don't duplicate copyright/bug report/license string

Move the copyright/bug report/license string to an own constant and use
it for the output of help() and version() to avoid duplication and
prevent the strings from getting out of sync. This makes the text
section of ifpps.o slightly smaller:

before:
   text	   data	    bss	    dec	    hex	filename
  22146	      0	   1456	  23602	   5c32	ifpps/ifpps.o

after:
   text	   data	    bss	    dec	    hex	filename
  21807	      0	   1456	  23263	   5adf	ifpps/ifpps.o

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 12 insertions, 16 deletions

diff --git a/ifpps.c b/ifpps.c
index 77c63a6..7dc8e68 100644
--- a/ifpps.c
+++ b/ifpps.c
@@ -93,6 +93,14 @@ static const struct option long_options[] = {
 	{NULL, 0, NULL, 0}
 };
 
+static const char *copyright = "Please report bugs to <bugs@netsniff-ng.org>\n"
+	"Copyright (C) 2009-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
+	"Swiss federal institute of technology (ETH Zurich)\n"
+	"Copyright (C) 2013 Tobias Klauser <tklauser@distanz.ch>\n"
+	"License: GNU GPL version 2.0\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";
+
 static void signal_handler(int number)
 {
 	switch (number) {
@@ -137,14 +145,8 @@ static void __noreturn help(void)
 	     "  ifpps -lpcd wlan0 > plot.dat\n\n"
 	     "Note:\n"
 	     "  On 10G cards, RX/TX statistics are usually accumulated each > 1sec.\n"
-	     "  Thus, in those situations, it's good to use a -t of 10sec.\n\n"
-	     "Please report bugs to <bugs@netsniff-ng.org>\n"
-	     "Copyright (C) 2009-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
-	     "Swiss federal institute of technology (ETH Zurich)\n"
-	     "Copyright (C) 2013 Tobias Klauser <tklauser@distanz.ch>\n"
-	     "License: GNU GPL version 2.0\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");
+	     "  Thus, in those situations, it's good to use a -t of 10sec.\n\n");
+	puts(copyright);
 	die();
 }
 
@@ -152,14 +154,8 @@ static void __noreturn version(void)
 {
 	printf("\nifpps %s, Git id: %s\n", VERSION_LONG, GITVERSION);
 	puts("top-like kernel networking and system statistics\n"
-	     "http://www.netsniff-ng.org\n\n"
-	     "Please report bugs to <bugs@netsniff-ng.org>\n"
-	     "Copyright (C) 2009-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
-	     "Swiss federal institute of technology (ETH Zurich)\n"
-	     "Copyright (C) 2013 Tobias Klauser <tklauser@distanz.ch>\n"
-	     "License: GNU GPL version 2.0\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");
+	     "http://www.netsniff-ng.org\n\n");
+	puts(copyright);
 	die();
 }