astraceroute: 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 astraceroute.o slightly smaller:

before:
   text	   data	    bss	    dec	    hex	filename
  18481	      0	      4	  18485	   4835	astraceroute/astraceroute.o

after:
   text	   data	    bss	    dec	    hex	filename
  18201	      0	      4	  18205	   471d	astraceroute/astraceroute.o

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

1 files changed, 11 insertions, 14 deletions

diff --git a/astraceroute.c b/astraceroute.c
index 6b2ffc5..cef668a 100644
--- a/astraceroute.c
+++ b/astraceroute.c
@@ -117,6 +117,13 @@ 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) 2011-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
+	"Swiss federal institute of technology (ETH Zurich)\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 const struct sock_filter ipv4_icmp_type_11[] = {
 	{ 0x28, 0, 0, 0x0000000c },	/* ldh [12]		*/
 	{ 0x15, 0, 8, 0x00000800 },	/* jneq #0x800, drop	*/
@@ -226,13 +233,8 @@ static void __noreturn help(void)
 	     "  If the TCP probe did not give any results, then astraceroute will\n"
 	     "  automatically probe for classic ICMP packets! To gather more\n"
 	     "  information about astraceroute's fetched AS numbers, see e.g.\n"
-	     "  http://bgp.he.net/AS<number>!\n\n"
-	     "Please report bugs to <bugs@netsniff-ng.org>\n"
-	     "Copyright (C) 2011-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
-	     "Swiss federal institute of technology (ETH Zurich)\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://bgp.he.net/AS<number>!\n\n");
+	puts(copyright);
 	die();
 }
 
@@ -240,13 +242,8 @@ static void __noreturn version(void)
 {
 	printf("\nastraceroute %s, Git id: %s\n", VERSION_LONG, GITVERSION);
 	puts("autonomous system trace route utility\n"
-	     "http://www.netsniff-ng.org\n\n"
-	     "Please report bugs to <bugs@netsniff-ng.org>\n"
-	     "Copyright (C) 2011-2013 Daniel Borkmann <dborkma@tik.ee.ethz.ch>\n"
-	     "Swiss federal institute of technology (ETH Zurich)\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();
 }