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/Makefile.am

@@ -56,6 +56,7 @@ whttrackrundir = $(bindir)
 whttrackrun_SCRIPTS = webhttrack
 
 libhttrack_la_SOURCES =  htscore.c htsparse.c htsback.c htscache.c \
+	htscache_selftest.c \
 	htscatchurl.c htsfilters.c htsftp.c htshash.c coucal/coucal.c \
 	htshelp.c htslib.c htscoremain.c \
 	htsname.c htsrobots.c htstools.c htswizard.c \
@@ -65,7 +66,7 @@ libhttrack_la_SOURCES =  htscore.c htsparse.c htsback.c htscache.c \
 	md5.c \
 	minizip/ioapi.c minizip/mztools.c minizip/unzip.c minizip/zip.c \
 	hts-indextmpl.h htsalias.h htsback.h htsbase.h htssafe.h \
-	htsbasenet.h htsbauth.h htscache.h htscatchurl.h  \
+	htsbasenet.h htsbauth.h htscache.h htscache_selftest.h htscatchurl.h  \
 	htsconfig.h htscore.h htsparse.h htscoremain.h htsdefines.h  \
 	htsfilters.h htsftp.h htsglobal.h htshash.h coucal/coucal.h \
 	htshelp.h htsindex.h htslib.h htsmd5.h \

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
@@ -1105,20 +1107,24 @@ static htsblk cache_readex_old(httrackp * opt, cache_back * cache,
         //
         cache_rint(cache->olddat, &r.statuscode);
         cache_rLLint(cache->olddat, &r.size);
-        cache_rstr(cache->olddat, r.msg);
-        cache_rstr(cache->olddat, r.contenttype);
+        cache_rstr(cache->olddat, r.msg, sizeof(r.msg));
+        cache_rstr(cache->olddat, r.contenttype, sizeof(r.contenttype));
         if (cache->version >= 3)
-          cache_rstr(cache->olddat, r.charset);
-        cache_rstr(cache->olddat, r.lastmodified);
-        cache_rstr(cache->olddat, r.etag);
-        cache_rstr(cache->olddat, r.location);
+          cache_rstr(cache->olddat, r.charset, sizeof(r.charset));
+        cache_rstr(cache->olddat, r.lastmodified, sizeof(r.lastmodified));
+        cache_rstr(cache->olddat, r.etag, sizeof(r.etag));
+        // r.location points into a HTS_URLMAXSIZE*2 buffer
+        cache_rstr(cache->olddat, r.location, HTS_URLMAXSIZE * 2);
         if (cache->version >= 2)
-          cache_rstr(cache->olddat, r.cdispo);
+          cache_rstr(cache->olddat, r.cdispo, sizeof(r.cdispo));
         if (cache->version >= 4) {
-          cache_rstr(cache->olddat, previous_save);     // adr
-          cache_rstr(cache->olddat, previous_save);     // fil
+          cache_rstr(cache->olddat, previous_save,
+                     sizeof(previous_save)); // adr
+          cache_rstr(cache->olddat, previous_save,
+                     sizeof(previous_save)); // fil
           previous_save[0] = '\0';
-          cache_rstr(cache->olddat, previous_save);     // save
+          cache_rstr(cache->olddat, previous_save,
+                     sizeof(previous_save)); // save
           if (return_save != NULL) {
             strlcpybuff(return_save, previous_save, HTS_URLMAXSIZE * 2);
           }
@@ -1127,8 +1133,8 @@ static htsblk cache_readex_old(httrackp * opt, cache_back * cache,
           r.headers = cache_rstr_addr(cache->olddat);
         }
         //
-        cache_rstr(cache->olddat, check);
-        if (strcmp(check, "HTS") == 0) {        /* intégrité OK */
+        cache_rstr(cache->olddat, check, sizeof(check));
+        if (strcmp(check, "HTS") == 0) { /* integrity OK */
           ok = 1;
         }
         cache_rLLint(cache->olddat, &size_read);        /* lire size pour être sûr de la taille déclarée (réécrire) */
@@ -1767,12 +1773,12 @@ void cache_init(cache_back * cache, httrackp * opt) {
           char firstline[256];
           char *a = cache->use;
 
-          a += cache_brstr(a, firstline);
-          if (strncmp(firstline, "CACHE-", 6) == 0) {   // Nouvelle version du cache
-            if (strncmp(firstline, "CACHE-1.", 8) == 0) {       // Version 1.1x
+          a += cache_brstr(a, firstline, sizeof(firstline));
+          if (strncmp(firstline, "CACHE-", 6) == 0) {     // new cache format
+            if (strncmp(firstline, "CACHE-1.", 8) == 0) { // version 1.1x
               cache->version = (int) (firstline[8] - '0');      // cache 1.x
               if (cache->version <= 5) {
-                a += cache_brstr(a, firstline);
+                a += cache_brstr(a, firstline, sizeof(firstline));
                 strcpybuff(cache->lastmodified, firstline);
               } else {
                 hts_log_print(opt, LOG_ERROR,
@@ -1783,7 +1789,7 @@ void cache_init(cache_back * cache, httrackp * opt) {
                 freet(cache->use);
                 cache->use = NULL;
               }
-            } else {            // non supporté
+            } else { // non supporté
               hts_log_print(opt, LOG_ERROR,
                             "Cache: %s not supported, ignoring current cache",
                             firstline);
@@ -1793,7 +1799,7 @@ void cache_init(cache_back * cache, httrackp * opt) {
               cache->use = NULL;
             }
             /* */
-          } else {              // Vieille version du cache
+          } else { // Vieille version du cache
             /* */
             hts_log_print(opt, LOG_WARNING,
                           "Cache: importing old cache format");
@@ -2118,7 +2124,7 @@ int cache_wstr(FILE * fp, const char *s) {
     return -1;
   return 0;
 }
-void cache_rstr(FILE * fp, char *s) {
+void cache_rstr(FILE *fp, char *s, size_t s_size) {
   INTsys i;
   char buff[256 + 4];
 
@@ -2127,13 +2133,26 @@ void cache_rstr(FILE * fp, char *s) {
   if (i < 0 || i > 32768)       /* error, something nasty happened */
     i = 0;
   if (i > 0) {
-    if ((int) fread(s, 1, i, fp) != i) {
+    /* Store at most s_size-1 bytes into s, but consume all i bytes from the
+       stream so the next field stays aligned (the field may be longer than the
+       destination in a tampered/old cache). */
+    const size_t want = (size_t) i;
+    const size_t store = want < s_size ? want : s_size - 1;
+
+    if (fread(s, 1, store, fp) != store) {
       int fread_cache_failed = 0;
 
       assertf(fread_cache_failed);
     }
+    if (want > store && fseek(fp, (long) (want - store), SEEK_CUR) != 0) {
+      int fseek_cache_failed = 0;
+
+      assertf(fseek_cache_failed);
+    }
+    s[store] = '\0';
+  } else {
+    s[0] = '\0';
   }
-  *(s + i) = '\0';
 }
 char *cache_rstr_addr(FILE * fp) {
   INTsys i;
@@ -2157,7 +2176,7 @@ char *cache_rstr_addr(FILE * fp) {
   }
   return addr;
 }
-int cache_brstr(char *adr, char *s) {
+int cache_brstr(char *adr, char *s, size_t s_size) {
   int i;
   int off;
   char buff[256 + 4];
@@ -2165,23 +2184,17 @@ int cache_brstr(char *adr, char *s) {
   off = binput(adr, buff, 256);
   adr += off;
   sscanf(buff, "%d", &i);
-  if (i > 0)
-    strncpy(s, adr, i);
-  *(s + i) = '\0';
-  off += i;
-  return off;
-}
-int cache_quickbrstr(char *adr, char *s) {
-  int i;
-  int off;
-  char buff[256 + 4];
+  if (i < 0 || i > 32768) /* guard a corrupt length */
+    i = 0;
+  if (i > 0) {
+    /* copy at most s_size-1 bytes; advance past the full field regardless */
+    const size_t store = (size_t) i < s_size ? (size_t) i : s_size - 1;
 
-  off = binput(adr, buff, 256);
-  adr += off;
-  sscanf(buff, "%d", &i);
-  if (i > 0)
-    strncpy(s, adr, i);
-  *(s + i) = '\0';
+    strncpy(s, adr, store);
+    s[store] = '\0';
+  } else {
+    s[0] = '\0';
+  }
   off += i;
   return off;
 }
@@ -2189,7 +2202,7 @@ int cache_quickbrstr(char *adr, char *s) {
 /* idem, mais en int */
 int cache_brint(char *adr, int *i) {
   char s[256];
-  int r = cache_brstr(adr, s);
+  int r = cache_brstr(adr, s, sizeof(s));
 
   if (r != -1)
     sscanf(s, "%d", i);
@@ -2198,7 +2211,7 @@ int cache_brint(char *adr, int *i) {
 void cache_rint(FILE * fp, int *i) {
   char s[256];
 
-  cache_rstr(fp, s);
+  cache_rstr(fp, s, sizeof(s));
   sscanf(s, "%d", i);
 }
 int cache_wint(FILE * fp, int i) {
@@ -2210,7 +2223,7 @@ int cache_wint(FILE * fp, int i) {
 void cache_rLLint(FILE * fp, LLint * i) {
   char s[256];
 
-  cache_rstr(fp, s);
+  cache_rstr(fp, s, sizeof(s));
   sscanf(s, LLintP, i);
 }
 int cache_wLLint(FILE * fp, LLint i) {

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
@@ -80,10 +82,9 @@ int cache_writedata(FILE * cache_ndx, FILE * cache_dat, const char *str1,
 int cache_readdata(cache_back * cache, const char *str1, const char *str2,
                    char **inbuff, int *len);
 
-void cache_rstr(FILE * fp, char *s);
+void cache_rstr(FILE *fp, char *s, size_t s_size);
 char *cache_rstr_addr(FILE * fp);
-int cache_brstr(char *adr, char *s);
-int cache_quickbrstr(char *adr, char *s);
+int cache_brstr(char *adr, char *s, size_t s_size);
 int cache_brint(char *adr, int *i);
 void cache_rint(FILE * fp, int *i);
 void cache_rLLint(FILE * fp, LLint * i);

src/htscache_selftest.c

@@ -0,0 +1,376 @@
+/* ------------------------------------------------------------ */
+/*
+HTTrack Website Copier, Offline Browser for Windows and Unix
+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
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Important notes:
+
+- We hereby ask people using this source NOT to use it in purpose of grabbing
+emails addresses, or collecting any other private information on persons.
+This would disgrace our work, and spoil the many hours we spent on it.
+
+Please visit our Website: http://www.httrack.com
+*/
+
+/* ------------------------------------------------------------ */
+/* File: htscache_selftest.c subroutines:                       */
+/*       in-process self-test for the (ZIP) cache subsystem      */
+/* Author: Xavier Roche                                         */
+/* ------------------------------------------------------------ */
+
+/* Drives the public cache API (cache_init / cache_add / cache_readex)
+   through a create -> read -> update cycle on a real on-disk ZIP cache,
+   asserting every header field and the (binary-safe) body round-trips.
+   Besides a few hand-crafted edge cases it stores a few thousand entries
+   (index/lookup scale) and a handful of large compressible/incompressible
+   bodies (zlib deflate/inflate). Reached via `httrack -#A <dir>`. */
+
+#define HTS_INTERNAL_BYTECODE
+
+#include "htscache_selftest.h"
+
+#include "htscache.h"
+#include "htscore.h"
+#include "htslib.h"
+#include "htszlib.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#define SELFTEST_VOLUME 3000 /* number of small entries in the scale pass */
+
+/* Open a cache session. A write session (ro=0) rotates new.zip -> old.zip and
+   opens a fresh new.zip; a read session (ro=1) opens new.zip in place. */
+static void selftest_open(cache_back *cache, httrackp *opt, int ro) {
+  memset(cache, 0, sizeof(*cache));
+  cache->type = 1;
+  cache->log = stderr;
+  cache->errlog = stderr;
+  cache->hashtable = coucal_new(0);
+  cache->ro = ro;
+  cache_init(cache, opt);
+}
+
+static void selftest_open_for_write(cache_back *cache, httrackp *opt) {
+  selftest_open(cache, opt, 0);
+}
+
+static void selftest_open_for_read(cache_back *cache, httrackp *opt) {
+  selftest_open(cache, opt, 1);
+}
+
+static void selftest_close(cache_back *cache) {
+  if (cache->dat != NULL) {
+    fclose(cache->dat);
+    cache->dat = NULL;
+  }
+  if (cache->ndx != NULL) {
+    fclose(cache->ndx);
+    cache->ndx = NULL;
+  }
+  if (cache->zipOutput != NULL) {
+    zipClose(cache->zipOutput,
+             "Created by HTTrack Website Copier (cache self-test)");
+    cache->zipOutput = NULL;
+  }
+  if (cache->zipInput != NULL) {
+    unzClose(cache->zipInput);
+    cache->zipInput = NULL;
+  }
+  /* hashtable is intentionally not coucal_delete()d: it would dump a stats
+     summary to stderr on every call, and this is a one-shot CLI subcommand
+     that exits right after (same choice as the other -# cache subcommands) */
+}
+
+/* Store one entry. The body is copied into a private buffer (any size), so
+   callers may pass const data and cache_add never sees a cast-away qualifier;
+   it consumes everything synchronously, so the copy is freed on return. */
+static void store_entry(httrackp *opt, cache_back *cache, const char *adr,
+                        const char *fil, const char *save, int statuscode,
+                        const char *msg, const char *contenttype,
+                        const char *charset, const char *lastmodified,
+                        const char *etag, const char *location,
+                        const char *body, size_t body_len) {
+  htsblk r;
+  char locbuf[HTS_URLMAXSIZE * 2];
+  char *bodycopy = NULL;
+
+  hts_init_htsblk(&r);
+  r.statuscode = statuscode;
+  r.size = (LLint) body_len;
+  strcpybuff(r.msg, msg);
+  strcpybuff(r.contenttype, contenttype);
+  strcpybuff(r.charset, charset);
+  strcpybuff(r.lastmodified, lastmodified);
+  strcpybuff(r.etag, etag);
+  strcpybuff(locbuf, location);
+  r.location = locbuf;
+  r.is_write = 0;
+  /* an empty body must be a NULL pointer: cache_add rejects a non-NULL
+     pointer with size 0 */
+  if (body_len != 0) {
+    bodycopy = malloct(body_len);
+    memcpy(bodycopy, body, body_len);
+    r.adr = bodycopy;
+  }
+  /* all_in_cache=1: keep the body in the ZIP whatever the content-type,
+     so the read path never depends on a file on disk */
+  cache_add(opt, cache, &r, adr, fil, save, 1, NULL);
+  if (bodycopy != NULL) {
+    freet(bodycopy);
+  }
+}
+
+/* Read one entry back and check every field. Returns the number of
+   mismatches (0 == success). */
+static int check_entry(httrackp *opt, cache_back *cache, const char *adr,
+                       const char *fil, int statuscode, const char *msg,
+                       const char *contenttype, const char *charset,
+                       const char *lastmodified, const char *etag,
+                       const char *location, const char *body,
+                       size_t body_len) {
+  int fail = 0;
+  char *locbuf = malloct(HTS_URLMAXSIZE * 2);
+  htsblk r;
+
+  locbuf[0] = '\0';
+  /* readonly=1: pure read, no rename/disk-write decision logic */
+  r = cache_readex(opt, cache, adr, fil, "", locbuf, NULL, 1);
+
+#define CHECK_STR(field, want)                                                 \
+  do {                                                                         \
+    if (strcmp((field), (want)) != 0) {                                        \
+      fprintf(stderr,                                                          \
+              "cache-selftest: %s%s: " #field " is '%s', expected '%s'\n",     \
+              adr, fil, (field), (want));                                      \
+      fail++;                                                                  \
+    }                                                                          \
+  } while (0)
+
+  if (r.statuscode != statuscode) {
+    fprintf(stderr, "cache-selftest: %s%s: statuscode is %d, expected %d\n",
+            adr, fil, r.statuscode, statuscode);
+    fail++;
+  }
+  CHECK_STR(r.msg, msg);
+  CHECK_STR(r.contenttype, contenttype);
+  CHECK_STR(r.charset, charset);
+  CHECK_STR(r.lastmodified, lastmodified);
+  CHECK_STR(r.etag, etag);
+  CHECK_STR(locbuf, location);
+
+  if (r.size != (LLint) body_len) {
+    fprintf(stderr, "cache-selftest: %s%s: size is " LLintP ", expected %d\n",
+            adr, fil, (LLint) r.size, (int) body_len);
+    fail++;
+  } else if (body_len != 0 &&
+             (r.adr == NULL || memcmp(r.adr, body, body_len) != 0)) {
+    fprintf(stderr, "cache-selftest: %s%s: body mismatch\n", adr, fil);
+    fail++;
+  }
+
+#undef CHECK_STR
+
+  if (r.adr != NULL) {
+    freet(r.adr);
+  }
+  freet(locbuf);
+  return fail;
+}
+
+/* Fill a body of the requested size. kind 0 is highly compressible (a short
+   repeating pattern), kind 1 is incompressible (a deterministic PRNG), kind 2
+   alternates the two -- together they exercise both deflate outcomes. */
+static void gen_body(char *buf, size_t len, int kind) {
+  unsigned int seed = 0x9e3779b1u ^ (unsigned int) len;
+  size_t j;
+
+  for (j = 0; j < len; j++) {
+    if (kind == 0 || (kind == 2 && (j & 1) == 0)) {
+      buf[j] = (char) ('A' + (j % 26));
+    } else {
+      seed = seed * 1103515245u + 12345u;
+      buf[j] = (char) (seed >> 16);
+    }
+  }
+}
+
+int cache_selftests(httrackp *opt, const char *dir) {
+  int failures = 0;
+  cache_back cache;
+  int i;
+
+  /* near-limit field values. The etag stresses htsblk.etag[256]; the location
+     stresses a long redirect URL. Each cached header line is read back through
+     a HTS_URLMAXSIZE-sized parse buffer ("<field>: <value>\r\n"), so the
+     round-trippable value is shorter than HTS_URLMAXSIZE: 1000 stays safely
+     under that real limit. */
+  static char etag_long[251];
+  static char location_long[1001];
+
+  /* a body with embedded NUL and high bytes, to prove binary safety */
+  static const char binary_body[] = {
+      'P',  'N',  'G', '\0', '\r', '\n',        (char) 0xFF, (char) 0x80,
+      '\0', '\0', 'e', 'n',  'd',  (char) 0xCA, (char) 0xFE, '\n'};
+
+  /* large bodies for the compression pass; kept alive across the write and
+     read passes so the read can compare against them */
+  static const size_t large_size[] = {200000, 200000, 50000};
+  const int large_count = (int) (sizeof(large_size) / sizeof(large_size[0]));
+  char *large_body[3];
+
+  /* edge-case bodies, named so store and read assert the exact same bytes */
+  const char *const body_index = "<html><body>hello</body></html>";
+  const char *const body_api = "{\"k\":\"v\"}";
+  const char *const body_updated = "<html><body>UPDATED CONTENT</body></html>";
+  const char *const body_404 = "<html><body>404 Not Found</body></html>";
+
+  memset(etag_long, 'E', sizeof(etag_long) - 1);
+  etag_long[sizeof(etag_long) - 1] = '\0';
+  memset(location_long, 'L', sizeof(location_long) - 1);
+  location_long[sizeof(location_long) - 1] = '\0';
+
+  for (i = 0; i < large_count; i++) {
+    large_body[i] = malloct(large_size[i]);
+    gen_body(large_body[i], large_size[i], i);
+  }
+
+  /* set up an isolated cache directory */
+  {
+    char base[HTS_URLMAXSIZE];
+
+    strcpybuff(base, dir);
+    if (base[0] != '\0' && base[strlen(base) - 1] != '/') {
+      strcatbuff(base, "/");
+    }
+    StringCopy(opt->path_log, base);
+  }
+  opt->cache = 1;
+
+  /* pass 1: create everything in a single write session */
+  selftest_open_for_write(&cache, opt);
+
+  /* edge cases: normal HTML page */
+  store_entry(opt, &cache, "example.com", "/", "example.com/index.html", 200,
+              "OK", "text/html", "utf-8", "Mon, 01 Jan 2024 00:00:00 GMT",
+              "etag-normal", "", body_index, strlen(body_index));
+  /* redirect: empty body, empty optional fields, near-limit location */
+  store_entry(opt, &cache, "example.com", "/moved", "example.com/moved.html",
+              301, "Moved Permanently", "text/html", "", "", "", location_long,
+              NULL, 0);
+  /* non-HTML content-type kept in cache via all_in_cache, near-limit etag */
+  store_entry(opt, &cache, "example.com", "/api", "example.com/api.json", 200,
+              "OK", "application/json", "utf-8",
+              "Tue, 02 Jan 2024 12:00:00 GMT", etag_long, "", body_api,
+              strlen(body_api));
+  /* binary body */
+  store_entry(opt, &cache, "example.com", "/logo", "example.com/logo.png", 200,
+              "OK", "image/png", "", "", "etag-bin", "", binary_body,
+              sizeof(binary_body));
+  /* error status with a body and a location (non-2xx codes are cached too) */
+  store_entry(opt, &cache, "example.com", "/gone", "example.com/gone.html", 404,
+              "Not Found", "text/html", "utf-8", "", "etag-404",
+              "https://example.com/where-it-went", body_404, strlen(body_404));
+
+  /* scale: a few thousand small entries */
+  for (i = 0; i < SELFTEST_VOLUME; i++) {
+    char fil[64], save[128], body[64];
+
+    sprintf(fil, "/v/%05d", i);
+    sprintf(save, "example.com/v/%05d.html", i);
+    sprintf(body, "<html>volume entry %d</html>", i);
+    store_entry(opt, &cache, "example.com", fil, save, 200, "OK", "text/html",
+                "utf-8", "", "", "", body, strlen(body));
+  }
+
+  /* compression: a few large bodies */
+  for (i = 0; i < large_count; i++) {
+    char fil[64], save[128];
+
+    sprintf(fil, "/big/%d.bin", i);
+    sprintf(save, "example.com/big/%d.bin", i);
+    store_entry(opt, &cache, "example.com", fil, save, 200, "OK",
+                "application/octet-stream", "", "", "", "", large_body[i],
+                large_size[i]);
+  }
+
+  selftest_close(&cache);
+
+  /* pass 2: read back and verify everything round-tripped */
+  selftest_open_for_read(&cache, opt);
+
+  failures += check_entry(opt, &cache, "example.com", "/", 200, "OK",
+                          "text/html", "utf-8", "Mon, 01 Jan 2024 00:00:00 GMT",
+                          "etag-normal", "", body_index, strlen(body_index));
+  failures += check_entry(opt, &cache, "example.com", "/moved", 301,
+                          "Moved Permanently", "text/html", "", "", "",
+                          location_long, NULL, 0);
+  failures +=
+      check_entry(opt, &cache, "example.com", "/api", 200, "OK",
+                  "application/json", "utf-8", "Tue, 02 Jan 2024 12:00:00 GMT",
+                  etag_long, "", body_api, strlen(body_api));
+  failures +=
+      check_entry(opt, &cache, "example.com", "/logo", 200, "OK", "image/png",
+                  "", "", "etag-bin", "", binary_body, sizeof(binary_body));
+  failures += check_entry(opt, &cache, "example.com", "/gone", 404, "Not Found",
+                          "text/html", "utf-8", "", "etag-404",
+                          "https://example.com/where-it-went", body_404,
+                          strlen(body_404));
+
+  for (i = 0; i < SELFTEST_VOLUME; i++) {
+    char fil[64], body[64];
+
+    sprintf(fil, "/v/%05d", i);
+    sprintf(body, "<html>volume entry %d</html>", i);
+    failures +=
+        check_entry(opt, &cache, "example.com", fil, 200, "OK", "text/html",
+                    "utf-8", "", "", "", body, strlen(body));
+  }
+
+  for (i = 0; i < large_count; i++) {
+    char fil[64];
+
+    sprintf(fil, "/big/%d.bin", i);
+    failures += check_entry(opt, &cache, "example.com", fil, 200, "OK",
+                            "application/octet-stream", "", "", "", "",
+                            large_body[i], large_size[i]);
+  }
+
+  selftest_close(&cache);
+
+  /* pass 3: update one edge entry with new body and headers */
+  selftest_open_for_write(&cache, opt);
+  store_entry(opt, &cache, "example.com", "/", "example.com/index.html", 200,
+              "OK", "text/html", "iso-8859-1", "Wed, 03 Jan 2024 09:30:00 GMT",
+              "etag-updated", "", body_updated, strlen(body_updated));
+  selftest_close(&cache);
+
+  /* pass 4: re-read and confirm the updated value, not the old one */
+  selftest_open_for_read(&cache, opt);
+  failures +=
+      check_entry(opt, &cache, "example.com", "/", 200, "OK", "text/html",
+                  "iso-8859-1", "Wed, 03 Jan 2024 09:30:00 GMT", "etag-updated",
+                  "", body_updated, strlen(body_updated));
+  selftest_close(&cache);
+
+  for (i = 0; i < large_count; i++) {
+    freet(large_body[i]);
+  }
+
+  return failures;
+}

src/htscache_selftest.h

@@ -0,0 +1,51 @@
+/* ------------------------------------------------------------ */
+/*
+HTTrack Website Copier, Offline Browser for Windows and Unix
+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
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Important notes:
+
+- We hereby ask people using this source NOT to use it in purpose of grabbing
+emails addresses, or collecting any other private information on persons.
+This would disgrace our work, and spoil the many hours we spent on it.
+
+Please visit our Website: http://www.httrack.com
+*/
+
+/* ------------------------------------------------------------ */
+/* File: htscache_selftest.h                                    */
+/* Author: Xavier Roche                                         */
+/* ------------------------------------------------------------ */
+
+#ifndef HTSCACHE_SELFTEST_DEFH
+#define HTSCACHE_SELFTEST_DEFH
+
+#ifdef HTS_INTERNAL_BYTECODE
+
+#ifndef HTS_DEF_FWSTRUCT_httrackp
+#define HTS_DEF_FWSTRUCT_httrackp
+typedef struct httrackp httrackp;
+#endif
+
+/* Run the cache create/read/update self-test against a working directory.
+   Returns the number of failed checks (0 == success). */
+int cache_selftests(httrackp *opt, const char *dir);
+
+#endif
+
+#endif

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
@@ -46,6 +48,7 @@ Please visit our Website: http://www.httrack.com
 #include "htszlib.h"
 #include "htscharset.h"
 #include "htsencoding.h"
+#include "htscache_selftest.h"
 #include "htsmd5.h"
 
 #include <ctype.h>
@@ -2113,6 +2116,19 @@ static int hts_main_internal(int argc, char **argv, httrackp * opt) {
           case '#':{           // non documenté
               com++;
               switch (*com) {
+              case 'A': // cache self-test: httrack -#A <dir>
+                if (na + 1 < argc) {
+                  const int err = cache_selftests(opt, argv[na + 1]);
+
+                  printf("cache-selftest: %s\n", err ? "FAIL" : "OK");
+                  htsmain_free();
+                  return err;
+                } else {
+                  fprintf(stderr, "Option #A requires a directory argument\n");
+                  htsmain_free();
+                  return 1;
+                }
+                break;
               case 'C':        // list cache files : httrack -#C '*spid*.gif' will attempt to find the matching file
                 {
                   int hasFilter = 0;
@@ -2155,8 +2171,8 @@ static int hts_main_internal(int argc, char **argv, httrackp * opt) {
                       char firstline[256];
                       char *a = cacheNdx;
 
-                      a += cache_brstr(a, firstline);
-                      a += cache_brstr(a, firstline);
+                      a += cache_brstr(a, firstline, sizeof(firstline));
+                      a += cache_brstr(a, firstline, sizeof(firstline));
                       while(a != NULL) {
                         a = strchr(a + 1, '\n');        /* start of line */
                         if (a) {

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

tests/01_engine-cache.test

@@ -0,0 +1,46 @@
+#!/bin/bash
+#
+
+# Cache create/read/update logic (driven by 'httrack -#A <dir>').
+#
+# The in-process self-test stores several hand-crafted edge entries (normal
+# HTML, an empty redirect with a near-limit location, a non-HTML body kept via
+# all-in-cache, a binary body with embedded NUL/high bytes), a few thousand
+# small entries (index/lookup scale), and a few large compressible and
+# incompressible bodies (zlib deflate/inflate). It reads everything back
+# asserting every header field and the body round-trip byte for byte, then
+# updates one entry and confirms the new value is read back. It exits non-zero
+# on the first mismatch.
+
+set -eu
+
+dir=$(mktemp -d)
+trap 'rm -rf "$dir"' EXIT
+
+# Like the other -# debug modes, a trailing token (the working directory) is
+# required; a bare '-#A' falls through to the usage screen.
+out=$(httrack -#A "$dir")
+
+# Match the exact success line, so the test cannot pass for an unrelated reason
+# (e.g. the -#A mode being gone and falling through to the usage screen, which
+# also exits non-zero but never prints this).
+test "$out" = "cache-selftest: OK" || {
+    echo "expected 'cache-selftest: OK', got: $out" >&2
+    exit 1
+}
+
+# The self-test must have actually produced a ZIP cache on disk.
+test -e "$dir/hts-cache/new.zip" || {
+    echo "no ZIP cache was written by the self-test" >&2
+    exit 1
+}
+
+# Sanity-check the cache footprint: the few-thousand-entry pass is expected to
+# weigh ~1-2 MB. Fail if it balloons well past that (e.g. a per-entry overhead
+# regression or runaway growth), so the cache size stays bounded.
+ceiling=$((4 * 1024 * 1024))
+bytes=$(du -sb "$dir/hts-cache" | cut -f1)
+test "$bytes" -le "$ceiling" || {
+    echo "cache footprint $bytes bytes exceeds ${ceiling} ceiling" >&2
+    exit 1
+}

tests/Makefile.am

@@ -11,6 +11,7 @@ TESTS_ENVIRONMENT += top_srcdir=$(top_srcdir)
 TEST_EXTENSIONS = .test
 TESTS = \
 	00_runnable.test \
+	01_engine-cache.test \
 	01_engine-charset.test \
 	01_engine-cmdline.test \
 	01_engine-entities.test \