Support PHP 7.x and 8.x and drop internal libcrack library

Recent cracklib versions have different dictionary format
from what the internal libcrack	code have been using. Drop the
internal libcrack copy and link to the external cracklib.

Add support for	PHP 7.x and 8.x and drop support for PHP 4.x and
5.x at the same	time.

Dropped the notion of a "default open dictionary" which was always
the last opened one and just complicated things. Instead, made the
argument to crack_opendict() optional so the global configuration
"crack.default_dictionary" can be used.

Reordered the arguments to crack_check() so the dictionary
resource became the first argument and mandatory.

Signed-off-by: Zoltán Böszörményi <[email protected]>

.gitignore

@@ -0,0 +1,26 @@
+*~
+Makefile
+Makefile.fragments
+Makefile.objects
+autom4te.cache
+build
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+configure
+configure.ac
+libtool
+run-tests.php
+modules/
+.libs
+*.la
+*.lo
+
+tests/*.diff
+tests/*.exp
+tests/*.log
+tests/*.out
+tests/*.php
+tests/*.sh

config.m4

@@ -7,9 +7,6 @@ PHP_ARG_WITH(crack, for cracklib support,
 
 if test "$PHP_CRACK" != "no"; then
 
-  if test "$PHP_CRACK" != "yes"; then
-    AC_MSG_ERROR(Only the bundled library is supported right now)
-
     for i in $PHP_CRACK/lib $PHP_CRACK/cracklib /usr/local/lib /usr/lib; do
       test -f $i/libcrack.$SHLIB_SUFFIX_NAME -o -f $i/libcrack.a && CRACK_LIBDIR=$i && break
     done
@@ -33,17 +30,5 @@ if test "$PHP_CRACK" != "no"; then
     PHP_SUBST(CRACK_SHARED_LIBADD)
     AC_DEFINE(HAVE_CRACK, 1, [ Define to 1 if we are building with the crack library. ])
     AC_DEFINE(HAVE_CRACK_BUNDLED, 0, [ Define to 1 to build against the bundled crack library. ])
-  else
-    # use bundled library
-    PHP_CRACK_CFLAGS="-I@ext_srcdir@/libcrack/include"
-
-    sources="libcrack/src/fascist.c libcrack/src/packlib.c libcrack/src/rules.c"
-
-    PHP_NEW_EXTENSION(crack, crack.c $sources, $ext_shared, , $PHP_CRACK_CFLAGS)
-    AC_DEFINE(HAVE_CRACK, 1, [ Define to 1 if we are building with the crack library. ])
-    AC_DEFINE(HAVE_CRACK_BUNDLED, 1, [ Define to 1 to build against the bundled crack library. ])
-
-    PHP_ADD_BUILD_DIR($ext_builddir/libcrack)
-    PHP_ADD_BUILD_DIR($ext_builddir/libcrack/src)
-  fi
+
 fi