1 files changed, 51 insertions, 0 deletions
diff --git a/wsutil/cfutils.c b/wsutil/cfutils.c
new file mode 100644
index 00000000..5693411a
--- /dev/null
+++ b/wsutil/cfutils.c
@@ -0,0 +1,51 @@
+/* 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
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <glib.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <wsutil/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;
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */