Update the way of searching for OpenSSL

OpenSSL used to have a "exec_prefix" pkg-config variable that allowed us
to figure out where the "openssl" binary could be found.

As of OpenSSL 3.3, this pkg-config variable no longer exists, so we
can't use it anymore.

Migrate to AC_PATH_PROG to avoid that issue.

While here, remove the "c_rehash" fallback that we used to require for
older distributions, as none of the distributions that require it are
supported anymore.

configure.ac

@@ -204,9 +204,9 @@ AM_CONDITIONAL([JPEG], [test x$HAVE_JPEGLIB = x1])
 AC_DEFINE_UNQUOTED([HAVE_JPEGLIB], $HAVE_JPEGLIB, [Define to 1 if you have libjpeg installed])
 
 PKG_CHECK_MODULES(SSL, "openssl", [HAVE_OPENSSL=1])
-PKG_CHECK_VAR(SSL_PREFIX, "openssl", "exec_prefix",, AC_MSG_ERROR([Could not find exec_prefix for openssl]))
+AC_PATH_PROG(OPENSSL_PATH, openssl)
 AC_DEFINE_UNQUOTED([HAVE_OPENSSL], $HAVE_OPENSSL, [Define to 1 if you have OpenSSL installed])
-AC_SUBST(SSL_PREFIX)
+AC_SUBST(OPENSSL_PATH)
 
 PKG_CHECK_MODULES(CURL, "libcurl", [HAVE_CURL=1])
 MAINVERSION=$(echo $PACKAGE_VERSION|sed -e 's/-.*$//')

debian/apparmor-profiles/beid

@@ -3,4 +3,4 @@
   /etc/ld.so.conf.d/* r,
   /run/pcscd/pcscd.comm rw,
   /usr/lib/eid-mw/* ix,
-  /usr/bin/pinentry ix,
+  /usr/bin/pinentry* ix,

debian/beid-mozilla-extension.install

@@ -1 +1 @@
-debian/apparmor-profiles/beid etc/apparmor.d/abstractions/
+debian/apparmor-profiles/beid etc/apparmor.d/abstractions/ubuntu-browsers.d/

plugins_tools/eid-viewer/Makefile.am

@@ -217,7 +217,7 @@ dist_trust_DATA = \
 	certs/belgiumrca6.pem
 
 install-data-hook:
-	if ( $(SSL_PREFIX)/bin/openssl help 2>&1 | grep -q rehash); then $(SSL_PREFIX)/bin/openssl rehash $(DESTDIR)/$(trustdir); else $(SSL_PREFIX)/bin/c_rehash $(DESTDIR)/$(trustdir); fi
+	$(OPENSSL_PATH) rehash $(DESTDIR)/$(trustdir)
 
 gtk/viewer_glade.h: gtk/viewer.glade
 	$(top_srcdir)/plugins_tools/aboutmw/gtk/gen.sh VIEWER_GLADE_H VIEWER_GLADE_STRING < $^ > $@