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-rw-r--r--src/lib/version.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/lib/version.c b/src/lib/version.c
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index 0000000..c4dc025
--- /dev/null
+++ b/src/lib/version.c
@@ -0,0 +1,58 @@
+/*
+ * version.c Validate application and library magic numbers.
+ *
+ * Version: $Id$
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * Copyright 1999-2014 The FreeRADIUS server project
+ */
+
+RCSID("$Id$")
+
+#include <freeradius-devel/libradius.h>
+
+static uint64_t libmagic = RADIUSD_MAGIC_NUMBER;
+
+/** Check if the application linking to the library has the correct magic number
+ *
+ * @param magic number as defined by RADIUSD_MAGIC_NUMBER
+ * @returns 0 on success, -1 on prefix mismatch, -2 on version mismatch -3 on commit mismatch.
+ */
+int fr_check_lib_magic(uint64_t magic)
+{
+ if (MAGIC_PREFIX(magic) != MAGIC_PREFIX(libmagic)) {
+ fr_strerror_printf("Application and libfreeradius-radius magic number (prefix) mismatch."
+ " application: %x library: %x",
+ MAGIC_PREFIX(magic), MAGIC_PREFIX(libmagic));
+ return -1;
+ }
+
+ if (MAGIC_VERSION(magic) != MAGIC_VERSION(libmagic)) {
+ fr_strerror_printf("Application and libfreeradius-radius magic number (version) mismatch."
+ " application: %lx library: %lx",
+ (unsigned long) MAGIC_VERSION(magic), (unsigned long) MAGIC_VERSION(libmagic));
+ return -2;
+ }
+
+ if (MAGIC_COMMIT(magic) != MAGIC_COMMIT(libmagic)) {
+ fr_strerror_printf("Application and libfreeradius-radius magic number (commit) mismatch."
+ " application: %lx library: %lx",
+ (unsigned long) MAGIC_COMMIT(magic), (unsigned long) MAGIC_COMMIT(libmagic));
+ return -3;
+ }
+
+ return 0;
+}