Replace generic C wrapper with individual programs

* src/wrapper.c: Delete.
* src/crontab.c: New file.
* src/mcron.c: Likewise.
* src/cron.c: Likewise.
* configure.ac: Adapt 'AC_CONFIG_DIR' to use "src/mcron.c".
* Makefile.am (bin_crontab_SOURCES, bin_cron_SOURCES)
(bin_mcron_SOURCES): Use new files.
(bin_cron_CPPFLAGS, bin_mcron_CPPFLAGS, bin_crontab_CPPFLAGS): Delete.

1 files changed, 0 insertions, 90 deletions

diff --git a/src/wrapper.c b/src/wrapper.c
deleted file mode 100644
index d5be805..0000000
--- a/src/wrapper.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/* wrapper.c -- C code booting Guile
-   Copyright © 2003, 2014 Dale Mellor <dale_mellor@users.sourceforge.net>
-   Copyright © 2015, 2016, 2017 Mathieu Lirzin <mthl@gnu.org>
-
-   This file is part of GNU Mcron.
-
-   GNU Mcron 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.
-
-   GNU Mcron 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 GNU Mcron.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* This C code represents a thin wrapper around the Guile code of Mcron.  It
-   is needed because the crontab personality requires SUID which is not
-   permitted for executable scripts.  */
-
-#include "utils.h"
-#include <libguile.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* Forward declarations.  */
-static void inner_main (void *closure, int argc, char **argv);
-static void react_to_terminal_signal (int sig);
-static SCM set_cron_signals (void);
-
-int
-main (int argc, char **argv)
-{
-  /* Set Guile load paths to ensure that Mcron modules will be found after
-     installation.  In a build environment let the 'pre-inst-env' script set
-     the correct paths.  */
-  if (getenv ("MCRON_UNINSTALLED") == NULL)
-    {
-      wrap_env_path ("GUILE_LOAD_PATH", PACKAGE_LOAD_PATH);
-      wrap_env_path ("GUILE_LOAD_COMPILED_PATH", PACKAGE_LOAD_COMPILED_PATH);
-    }
-
-  scm_boot_guile (argc, argv, inner_main, 0);
-
-  return EXIT_SUCCESS;
-}
-
-/* Launch the Mcron Guile main program.  */
-static void
-inner_main (void *closure, int argc, char **argv)
-{
-  scm_set_current_module (scm_c_resolve_module ("mcron scripts " PROGRAM));
-  /* Register the procedures to be called from Guile.  */
-  scm_c_define_gsubr ("c-set-cron-signals", 0, 0, 0, set_cron_signals);
-  /* Call main procedure.  */
-  scm_call_0 (scm_variable_ref (scm_c_lookup ("main")));
-}
-
-/* Set up all the signal handlers as required by the cron personality.  This
-   is necessary to perform the signal processing in C because the sigaction
-   function won't work when called from Guile.  */
-static SCM
-set_cron_signals ()
-{
-  static struct sigaction sa;
-
-  memset (&sa, 0, sizeof (sa));
-  sa.sa_handler = react_to_terminal_signal;
-  sigaction (SIGTERM, &sa, 0);
-  sigaction (SIGINT,  &sa, 0);
-  sigaction (SIGQUIT, &sa, 0);
-  sigaction (SIGHUP,  &sa, 0);
-
-  return SCM_BOOL_T;
-}
-
-/* Handle signal SIG and exit.  All signals that mcron handles will produce
-   the same behavior so we don't need to use SIG in the implementation.  */
-static void
-react_to_terminal_signal (int sig)
-{
-  scm_c_eval_string ("(delete-run-file)");
-  exit (EXIT_FAILURE);
-}