pam_faillock: move config to its own file

The configuration load can be reused by faillock.

* modules/pam_faillock/faillock_config.c: Move configuration loading
functions (read_config_file and set_conf_opt) to this file.
* modules/pam_faillock/faillock_config.h: Move configuration loading
macros and structures.
* modules/pam_faillock/Makefile.am: Add faillock_config.
* modules/pam_faillock/faillock.h: Remove configuration loading macros.
* modules/pam_faillock/pam_faillock.c: Remove configuration loading
functions, macros and structures.

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>

1 files changed, 85 insertions, 0 deletions

diff --git a/modules/pam_faillock/faillock_config.h b/modules/pam_faillock/faillock_config.h
new file mode 100644
index 00000000..81aa6654
--- /dev/null
+++ b/modules/pam_faillock/faillock_config.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2022 Tomas Mraz <tm@t8m.info>
+ * Copyright (c) 2022 Iker Pedrosa <ipedrosa@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions.  (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * faillock_config.h - load configuration options from file
+ *
+ */
+
+#ifndef _FAILLOCK_CONFIG_H
+#define _FAILLOCK_CONFIG_H
+
+#include <limits.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <security/pam_ext.h>
+
+#define FAILLOCK_FLAG_DENY_ROOT		0x1
+#define FAILLOCK_FLAG_AUDIT			0x2
+#define FAILLOCK_FLAG_SILENT		0x4
+#define FAILLOCK_FLAG_NO_LOG_INFO	0x8
+#define FAILLOCK_FLAG_UNLOCKED		0x10
+#define FAILLOCK_FLAG_LOCAL_ONLY	0x20
+#define FAILLOCK_FLAG_NO_DELAY		0x40
+
+#define FAILLOCK_CONF_MAX_LINELEN 	1023
+#define MAX_TIME_INTERVAL			604800 /* 7 days */
+
+struct options {
+	unsigned int action;
+	unsigned int flags;
+	unsigned short deny;
+	unsigned int fail_interval;
+	unsigned int unlock_time;
+	unsigned int root_unlock_time;
+	char *dir;
+	const char *user;
+	char *admin_group;
+	int failures;
+	uint64_t latest_time;
+	uid_t uid;
+	int is_admin;
+	uint64_t now;
+	int fatal_error;
+};
+
+int read_config_file(pam_handle_t *pamh, struct options *opts,
+					 const char *cfgfile);
+void set_conf_opt(pam_handle_t *pamh, struct options *opts, const char *name,
+		  const char *value);
+
+#endif /* _FAILLOCK_CONFIG_H */