Move get_os_version_info() to libwsutil.

This mean we also have to move CFString_to_C_string() there for OS X.

Change-Id: Ic91ad872e9d5290cf34f842503ededd5452e4337
Reviewed-on: https://code.wireshark.org/review/2511
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 54 insertions, 0 deletions

diff --git a/wsutil/cfutils.c b/wsutil/cfutils.c
new file mode 100644
index 0000000000..7b8e683cb3
--- /dev/null
+++ b/wsutil/cfutils.c
@@ -0,0 +1,54 @@
+/* cfutils.c
+ * Routines to work around deficiencies in Core Foundation, such as the
+ * lack of a routine to convert a CFString to a C string of arbitrary
+ * size.
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 2001 Gerald Combs
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#ifdef HAVE_OS_X_FRAMEWORKS
+#include <glib.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include "cfutils.h"
+
+/*
+ * Convert a CFString to a UTF-8-encoded C string; the resulting string
+ * is allocated with g_malloc().  Returns NULL if the conversion fails.
+ */
+char *
+CFString_to_C_string(CFStringRef cfstring)
+{
+	CFIndex string_len;
+	char *string;
+
+	string_len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstring),
+	    kCFStringEncodingUTF8);
+	string = (char *)g_malloc(string_len + 1);
+	if (!CFStringGetCString(cfstring, string, string_len + 1,
+	    kCFStringEncodingUTF8)) {
+		g_free(string);
+		return NULL;
+	}
+	return string;
+}
+#endif
+
+