Normalize copyright years and add SPDX identifiers

Collapse the stale "1998-2017" copyright ranges (and a handful of other
ranges) in HTTrack-authored source to a single earliest year taken from
git history: 1998 for files tracing back to the 2012 release-history
import, and the real first-commit year for later additions (2013 for
htsencoding, 2014 for htsarrays/htssafe/htsconcat, 2026 for the cache
self-test). Each header also gains an SPDX-License-Identifier:
GPL-3.0-or-later line.

The runtime "about" banners (httrack, proxytrack) and the man pages keep
a range, but now end in the current year computed at build time: via
__DATE__ for the C banners and makeman.sh for the generated httrack.1,
so they no longer freeze at a stale year.

Third-party notices (Even Rouault, Mathias Svensson, Info-ZIP, Eric
Young) and the BSD-licensed coucal submodule are left untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Signed-off-by: Xavier Roche <roche@httrack.com>

man/htsserver.1

@@ -1,6 +1,7 @@
 .\" Process this file with
 .\" groff -man -Tascii htsserver.1
 .\"
+.\" SPDX-License-Identifier: GPL-3.0-or-later
 .TH htsserver 1 "Mar 2003" "httrack website copier"
 .SH NAME
 htsserver \- offline browser server : copy websites to a local directory
@@ -35,7 +36,7 @@ Please reports bugs to
 .B <bugs@httrack.com>.
 Include a complete, self-contained example that will allow the bug to be reproduced, and say which version of (web)httrack you are using. Do not forget to detail options used, OS version, and any other information you deem necessary.
 .SH COPYRIGHT
-Copyright (C) 1998-2013 Xavier Roche and other contributors
+Copyright (C) 1998-2026 Xavier Roche and other contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

man/httrack.1

@@ -2,6 +2,7 @@
 .\" groff -man -Tascii httrack.1
 .\"
 .\" This file is generated by man/makeman.sh; do not edit by hand.
+.\" SPDX-License-Identifier: GPL-3.0-or-later
 .TH httrack 1 "13 June 2026" "httrack website copier"
 .SH NAME
 httrack \- offline browser : copy websites to a local directory

man/makeman.sh

@@ -110,6 +110,7 @@ cat <<'EOF'
 .\" groff -man -Tascii httrack.1
 .\"
 .\" This file is generated by man/makeman.sh; do not edit by hand.
+.\" SPDX-License-Identifier: GPL-3.0-or-later
 EOF
 printf '.TH httrack 1 "%s" "httrack website copier"\n' "$date_str"
 cat <<'EOF'

man/proxytrack.1

@@ -1,6 +1,7 @@
 .\" Process this file with
 .\" groff -man -Tascii proxytrack.1
 .\"
+.\" SPDX-License-Identifier: GPL-3.0-or-later
 .TH proxytrack 1 "Mar 2003" "httrack website copier"
 .SH NAME
 proxytrack \- proxy to serve content archived by httrack website copier
@@ -25,7 +26,7 @@ Please reports bugs to
 .B <bugs@httrack.com>.
 Include a complete, self-contained example that will allow the bug to be reproduced, and say which version of (web)httrack you are using. Do not forget to detail options used, OS version, and any other information you deem necessary.
 .SH COPYRIGHT
-Copyright (C) 1998-2013 Xavier Roche and other contributors
+Copyright (C) 1998-2026 Xavier Roche and other contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

man/webhttrack.1

@@ -1,6 +1,7 @@
 .\" Process this file with
 .\" groff -man -Tascii webhttrack.1
 .\"
+.\" SPDX-License-Identifier: GPL-3.0-or-later
 .TH webhttrack 1 "Mar 2003" "httrack website copier"
 .SH NAME
 webhttrack \- offline browser : copy websites to a local directory
@@ -36,7 +37,7 @@ Please reports bugs to
 .B <bugs@httrack.com>.
 Include a complete, self-contained example that will allow the bug to be reproduced, and say which version of (web)httrack you are using. Do not forget to detail options used, OS version, and any other information you deem necessary.
 .SH COPYRIGHT
-Copyright (C) 1998-2013 Xavier Roche and other contributors
+Copyright (C) 1998-2026 Xavier Roche and other contributors
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/hts-indextmpl.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsalias.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsalias.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsarrays.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2014 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsback.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsback.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsbase.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsbasenet.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsbauth.c

@@ -1,6 +1,8 @@
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsbauth.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscache.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscache.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscache_selftest.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2026 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscache_selftest.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2026 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscatchurl.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscatchurl.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscharset.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscharset.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsconcat.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2013 Xavier Roche and other contributors
+Copyright (C) 2014 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsconfig.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscore.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -3993,5 +3995,5 @@ void voidf(void) {
   (void) a;
 }
 
-// HTTrack Website Copier Copyright (C) 1998-2017 Xavier Roche and other contributors
+// HTTrack Website Copier Copyright (C) 1998 Xavier Roche and other contributors
 //

src/htscore.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscoremain.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htscoremain.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsdefines.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsencoding.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2013 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsencoding.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2013 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsfilters.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsfilters.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsftp.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsftp.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsglobal.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -202,7 +204,7 @@ Please visit our Website: http://www.httrack.com
 /* Taille max ligne de commande (>=HTS_URLMAXSIZE*2) */
 #define HTS_CDLMAXSIZE 1024
 
-/* Copyright (C) 1998-2017 Xavier Roche and other contributors */
+/* Copyright (C) 1998 Xavier Roche and other contributors */
 #define HTTRACK_AFF_AUTHORS "[XR&CO'2014]"
 #define HTS_DEFAULT_FOOTER "<!-- Mirrored from %s%s by HTTrack Website Copier/" HTTRACK_AFF_VERSION " " HTTRACK_AFF_AUTHORS ", %s -->"
 #define HTTRACK_WEB "http://www.httrack.com"

src/htshash.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htshash.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htshelp.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -182,7 +184,8 @@ void help_wizard(httrackp * opt) {
   printf("\n");
   printf("Welcome to HTTrack Website Copier (Offline Browser) " HTTRACK_VERSION
          "%s\n", hts_get_version_info(opt));
-  printf("Copyright (C) 1998-2017 Xavier Roche and other contributors\n");
+  printf("Copyright (C) 1998-%s Xavier Roche and other contributors\n",
+         &__DATE__[7]);
 #ifdef _WIN32
   printf("Note: You are running the commandline version,\n");
   printf("run 'WinHTTrack.exe' to get the GUI version.\n");
@@ -795,7 +798,10 @@ void help(const char *app, int more) {
   snprintf(info, sizeof(info), "HTTrack version " HTTRACK_VERSION "%s",
           hts_is_available());
   infomsg(info);
-  infomsg("Copyright (C) 1998-2017 Xavier Roche and other contributors");
+  snprintf(info, sizeof(info),
+           "Copyright (C) 1998-%s Xavier Roche and other contributors",
+           &__DATE__[7]);
+  infomsg(info);
 #ifdef HTS_PLATFORM_NAME
   infomsg("[compiled: " HTS_PLATFORM_NAME "]");
 #endif

src/htshelp.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsindex.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsindex.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsjava.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsjava.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htslib.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htslib.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsmd5.c

@@ -1,7 +1,9 @@
 
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsmd5.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsmodules.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsmodules.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsname.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsname.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsnet.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsopt.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsparse.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsparse.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsrobots.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsrobots.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htssafe.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 2014 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsserver.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsserver.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsstrings.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsthread.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsthread.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htstools.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htstools.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsweb.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htsweb.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htswizard.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htswizard.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htswrap.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htswrap.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htszlib.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/htszlib.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/httrack-library.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/httrack.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/httrack.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/proxy/main.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -91,7 +93,8 @@ int main(int argc, char *argv[]) {
   /* Args */
   printf("ProxyTrack %s, build proxies upon HTTrack Website Copier Archives\n",
          PROXYTRACK_VERSION);
-  printf("Copyright (C) 1998-2017 Xavier Roche and other contributors\n");
+  printf("Copyright (C) 1998-%s Xavier Roche and other contributors\n",
+         &__DATE__[7]);
   printf("\n");
   printf("This program is free software: you can redistribute it and/or modify\n");
   printf("it under the terms of the GNU General Public License as published by\n");

src/proxy/proxystrings.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/proxy/proxytrack.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/proxy/proxytrack.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/proxy/store.c

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by

src/proxy/store.h

@@ -1,7 +1,9 @@
 /* ------------------------------------------------------------ */
 /*
 HTTrack Website Copier, Offline Browser for Windows and Unix
-Copyright (C) 1998-2017 Xavier Roche and other contributors
+Copyright (C) 1998 Xavier Roche and other contributors
+
+SPDX-License-Identifier: GPL-3.0-or-later
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by